Koi Pond Air Pump: Quality Matters

HIBLOW WG Series: The Premium Koi Pond Air Pump

One often overlooked but essential component of a koi pond ecosystem is a high-quality koi pond air pump. This device plays a crucial role in keeping the pond environment clean, oxygen-rich, and conducive to fish and plant life. Why spend all that money on your beloved koi and pinch pennies on a koi pond air pump—an item essential to their livelihood?

Why Aeration Matters in a Koi Pond

Koi fish require well-oxygenated water to thrive. Without proper oxygen levels, koi can become sluggish, suffer from health issues, or even die. Here are the main reasons a koi pond air pump is indispensable:

1. Oxygenation of Water
   Fish, beneficial bacteria, and other aquatic organisms rely on dissolved oxygen. A high-quality koi pond air pump ensures consistent oxygen levels throughout the pond, especially in deeper or warmer water where oxygen tends to deplete.
2. Support for Beneficial Bacteria
   Aerobic bacteria play a key role in breaking down ammonia and nitrites in the pond, keeping the water clean and free of muck. These bacteria flourish and multiply exponentially in well-oxygenated environments.
3. Prevention of Stratification
   During hot months, pond water can stratify, creating layers with different temperatures and oxygen levels. An efficient air pump helps circulate the water, promoting uniform conditions throughout the water column.
4. Ice Prevention in Winter
   In colder climates, an air pump can keep a small area of the pond’s surface from freezing, allowing toxic gases to escape and fresh oxygen to enter the pond—essential for preventing fish kill.
5. Healthier, Happier Koi
   When oxygen levels are optimal and water quality is high, koi fish are more active, grow better, and display more vibrant colors.

HIBLOW WG Series: The Premium Koi Pond Air Pump

For pond owners seeking a dependable, high-performance air pump, the HIBLOW WG Series stands out. Engineered specifically for water gardens and koi ponds, the WG Series offers several features that cater to both novice and experienced pond keepers:

• Superior Build Quality: Designed in Japan, the WG Series is built for longevity and consistent performance using the highest-quality materials.
• Low Energy Consumption: These pumps are designed with efficiency in mind, operating on just 28–58 watts of power to keep running costs low.
• Quiet Operation: Thanks to advanced diaphragm technology, the WG Series is whisper quiet—seriously, it’s measured at the same decibel level as a human whisper.
• Reparability: HIBLOW air pumps can be rebuilt at least twice with only a few basic tools, allowing them to last 10–15 years on average.

WG Series Koi Pond Air Pump Sizing Chart:

Whether you’re setting up a new pond or upgrading an existing system, investing in a high-quality koi pond air pump is essential. The HIBLOW WG Series provides the reliability and performance needed to support a thriving aquatic ecosystem. With the right aeration system in place, your koi can flourish in a clean, balanced, and oxygen-rich environment for years to come.

More Pond Aeration Content

• Do I Need a Pond Aerator Cover?
• Introducing the HIBLOW Portable Pressure Gauge
• Introducing the HIBLOW Adjustable Height Pond Diffuser
• What Size Air Pump Should I Buy?
• DIY Pond Aeration
• How to Calculate Backpressure
• What Type of Diffuser Should I Buy for My Pond?
• How Water Depth, Pipe Size and Diffuser Type Affect Longevity
• DIY Solar Pond
• For all HIBLOW pond aeration content click here

Follow us on Facebook: HIBLOW Facebook Page

Do I need a Pond Aerator Cover?

 

If you own a pond aerator, you might be wondering whether you need a cover for it. If your system uses a rocking piston, rotary vane, or regenerative blower, then investing in a pond aerator cover is a smart move. These technologies aren’t designed to withstand direct exposure to the elements. Rain, snow, dust, and UV rays can all damage components and potentially shorten the lifespan of the unit.

While each type of aerator varies in durability and heat output, most benefit from a weather-resistant, well-ventilated enclosure that offers protection without restricting airflow.

Do Linear Diaphragm Air Pumps Need a Pond Aerator Cover?

HIBLOW aerators and other linear diaphragm brands (though not all) are UL-rated for outdoor use, meaning they can operate without a pond aerator cover and still withstand the elements. Most HIBLOW pond aerators feature aluminum housing that essentially acts as the enclosure.

However, many in the pond industry believe that a cover is necessary and often use fake rocks or other decorative enclosures that may restrict airflow. While some enclosures can be beneficial, others can actually reduce the lifespan of the aerator.

Heat Is the Enemy

HIBLOW’s diaphragms are made from EPDM rubber, which wears and ruptures more quickly in hot environments. Other rubber components, such as base and filter gaskets, also degrade faster under heat stress. While you can’t control the outside temperature, you can position your pump to maximize its longevity. Keeping the aerator out of direct sunlight and ensuring proper air circulation is the best way to extend its life.

Heat Test – Enclosures vs. Stand-Alone Setups

HIBLOW USA conducted a heat test, measuring temperatures for three different types of enclosures and for a HIBLOW air pump placed in both shade and direct sunlight.

Testing Conditions:

• Temperatures were measured at the top and bottom of each setup every 30 minutes between 10:30 AM and 2:30 PM.

• Starting temperature at 10:30 AM: 83°F (Real Feel: 94°F); ending temperature at 2:30 PM: 86°F (Real Feel: 97°F).

• Location: Saline, MI.

Results at 2:30 PM (warmest time of the day):

	Type	Temperature at the top	Temperature at the Bottom	Average Temperature
A	No enclosure in the shade	116.3 °F	129.9 °F	123.1 °F
B	Enclosure with 2 open ends	122.9 °F	127.7 °F	125.3 °F
C	No enclosure directly in the sun	123.1 °F	129.2 °F	126.2 °F
D	Fake rock without vents	132.2 °F	136.0 °F	134.1 °F
E	Riser top without vents	136.8 °F	149.5 °F	143.2 °F

Temperature Rankings (Coolest to Hottest):

#1 – A: No enclosure, in the shade.
No surprise here—this setup offers the best of both worlds: protection from the sun and unrestricted airflow. People often place pumps on the north side of the house, under trees, in sheds, garages, or crawlspaces.

#2 – B: Enclosure with two open ends.
Offers good airflow while keeping the aerator shaded. This is a quality setup.

#3 – C: No enclosure, in direct sun.
This setup’s higher temperature shows that airflow may be more important than shade alone when keeping the pump cool.

#4 – D: Fake rock without vents.
Although visually appealing, this setup restricts ventilation and significantly raises internal temperatures. Your diaphragms may rupture much faster.

#5 – E: Riser top without vents.
More common in the septic industry, this setup is risky for ponds. Aside from potential water intrusion and toxic gas exposure, the pump essentially “bakes” inside. As shown, this setup was 20°F hotter than a shaded pump in Michigan—worse in hotter states like Texas or Louisiana.

The Bottom Line:

To extend the life of your pond aerator and save money, aim to maximize airflow and keep the pump shaded. If you choose to use a pond aerator cover, ensure it’s ventilated. Drill holes in decorative covers or prop them up to allow air circulation from below.

If you have any questions about pond aerator covers or your HIBLOW air pump, please give us a call—we’d be happy to offer suggestions to improve your setup.

More Pond Aeration Content

• What Size Air Pump Should I Buy?
• DIY Pond Aeration
• How to Calculate Backpressure
• What Type of Diffuser Should I Buy for My Pond?
• How Water Depth, Pipe Size and Diffuser Type Affect Longevity
• DIY Solar Pond
• Pond Aerator System Maintenance
• New Adjustable Height Diffuser
• For all HIBLOW pond aeration content click here

Author: Mike Miner

How Does a Linear Diaphragm Air Pump Work?

HIBLOW (Techno Takatsuki) engineering in the late 1960’s invented the linear diaphragm air pump.  The energy efficient, quiet, lubrication/ oil free design is still the most efficient technology for producing continuous air flow.

 

Design concept – the speaker

The HIBLOW engineer conceptualized the design while observing how a speaker produces sound.

 

 

How a speaker works: A circular permanent magnet, attached to the frame of the speaker, creates a magnetic field.  The voice coil (a cylinder wound tightly with copper coil), placed inside the permanent magnet, turns into an electromagnet as alternating current (AC) electricity cycles through the copper wire.  The AC signal changes the polarity of the electromagnetic at the rate of the frequency (Hz) causing it to move in a linear motion through the permanent magnet.  The cone (or diaphragm) attached to the voice coil vibrates creating the sound we hear.

 

Linear diaphragm air pump principles of operation:

How it works: Linear diaphragm air pumps produce air flow from a set of diaphragms that are attached to a permanent magnetic rod.  The magnetic rod moves in a linear motion as AC electricity powers electromagnets (in purple above) made from copper wire wrapped around an iron core.  The magnetic attraction and repellent forces between the permanent magnet and electromagnets oscillate the rod at the frequency of the power supply (60 Hz in the US).  Meaning the rod is shuttled back and forth 60 x’s per second as the electromagnets change polarity from the alternating current.

The blue bubbles in the simulation above show the path of the air flow.  Following the bubble on the right side of the simulation: the diaphragm as it stretches inward (to the left), creates a vacuum effect – opening the umbrella valve and pulling ambient air into the chamber.  As the diaphragm moves back to the right, it pushes air out through the second umbrella valve (at the top of the diagram).  The same is happening on the other side in opposite orientation.  The combination creates consistent air flow with minimal pulsation that merges in the lower housing of the aerator before exiting through an outlet port.

Can a linear diaphragm air pump run on DC power?

No, the technology must run on AC power.  However, it is still used in many DC applications with a power inverter because of how energy efficient the technology is.

For more information about HIBLOW linear diaphragm air pumps, please send us an email or give us a call.

Email: info@hiblow-usa.com

Phone: 734-944-5032

Pond Aerator Maintenance

Managing a pond is no small task.  There are many variables that can impact the ecosystem and the pond’s appearance.  While mother nature is certainly in charge, adding a subsurface (bottom diffused) pond aeration system increases oxygen levels creating an environment for fish to thrive while improving water clarity. Maintaining the system to maximize results is the next challenge.  

Pond Aeration System Maintenance Steps:

*Although most of this information is relevant for rocking piston systems as well (often used for subsurface aeration of deeper ponds/ lakes) – the following focuses on linear diaphragm air pumps.  

1. Check the air filter every 6 months.  Clean/ replace as needed. 
2. Measure and log the pressure and water depth of your system periodically.     
3. Visually inspect the diffusers.  Clean or replace wear components as needed.
4. Balance the aeration system’s manifold if running multiple diffusers
5. Inspect the enclosure and clean it as needed
6. Repairing a linear diaphragm air pump

Read the full details on our website! 

A pond aerator is likely the only piece of equipment running 24/7 at your house.  Eventually the diaphragms will rupture.  the valves inside of the casing blocks (attached to the diaphragms), will also wear.  No need to buy a new pump when the diaphragms rupture.  Rebuild kits are available and can be installed in 20 minutes with a few tools.  We suggest rebuilding the pump 2 times.  Kits are available on our website.  Inside the product listing is an instruction video.  https://shop.hiblow-usa.com/

Over time, especially in hotter climates, gaskets may also deteriorate, especially the lower housing gasket that seals the upper and lower housings.  Gasket along with all other spare parts are available on our web shop. 

• What Size Air Pump Should I Buy?
• DIY Pond Aeration
• How to Calculate Backpressure
• What Type of Diffuser
• How Water Depth, Pipe Size and Diffuser Type Affect Longevity
• DIY Solar Pond
• For all HIBLOW pond aeration content click here

How to Size a Pond Aerator by the Number of Diffusers

Every pond is unique in size, shape, and depth. 

Figuring out the number of diffusers needed to mix the entirety of the pond and working backwards can be a prudent strategy. For example, if you have a kidney shaped pond, you probably need at least 3 diffusers. Some ponds may need 4 if they have multiple coves.

Pond Aerator Sizing Steps:

1. Choose the number of diffusers based on the shape and size of your pond.
2. Identify which model diffuser you are going to buy. Manufacturers typically publish how much air flow is needed to “self-clean” – the amount of air flow that will keep the pores open and free of biological growth. Somewhere in the 30-40 LPM (liter per minute) is common and creates good circulation.
3. Figure out the back pressure of your system (water pressure + diffuser backpressure + tubing friction loss). For a detailed step-by-step process, check out our article: https://www.hiblow-usa.com/2022/06/07/pond-aerator-how-to-calculate-backpressure/
4. Once you have figured out the backpressure of the system, review the pond aerator performance curves to determine the total amount of air flow. Start with the aerator recommended in the Pond Aerator Sizing Recommendation Table and bump up to the next size if needed. Pressure and flow have an inverse relationship – if one goes up, the other goes down. Performance curves are available on our website and are explained in the backpressure article.
5. Divide the number of diffusers needed by the total air flow. Choose the pump that exceeds the amount of flow per diffuser suggested by the manufacturer.

More examples are on our website!

If you have any questions about choosing the right size pond aerator, please give us a call at 734-944-5032 or email us at info@hiblow-usa.com.

What Size Aerator Should You Buy?

Subsurface aeration is the best way to mechanically initiate the transfer of oxygen into a pond. Although micro bubbles – created by air flowing through a diffuser – add some dissolved oxygen, the greatest transfer occurs as water circulates to the surface. Water at the surface absorbs oxygen from the atmosphere and then circulates back to the bottom of the pond. Turning over the pond – the process of moving the entire volume of water to the surface periodically – creates an oxygen rich environment at all depths. In turn, fish can thrive, and conditions are right to break down organic matter and reduce/ prevent algae blooms.

Given the importance of water circulation, choosing the right size pond aerator is critical for getting the best results.

 Need help? We recommend two methods for choosing the right pond aerator - using our pond sizing recommendations chart, and sizing your aerator by the number of diffusers.

Visit our website to read more about each method!

Your Source for Pond Aerators and Aquaculture 

If you have any questions about choosing the right size pond aerator, please give us a call at 734-944-5032 or email us at info@hiblow-usa.com.

HIBLOW is exhibiting at the Your Pond Farm Conference on October 19th!

Come see us in Barto, Pennsylvania on October 19th for the Your Pond Farm conference!  We value the opportunity to discuss all things pond aeration with industry professionals and DIYers.

More info about the conference here: https://www.pondtrademag.com/mark-your-calendars-2023-your-pond-farm-trade-show-on-thursday-oct-19/

HIBLOW is Your Premier Supplier of Pond Aerators

We have manufactured pond aerators for over 30 years. We know that reliability, energy efficiency, and low sound levels are all extremely important for your aquatic systems. Our pumps provide aeration and water circulation for water gardens, koi ponds, backyard/ farm ponds, aquaculture, hydroponics, and aquaponics.

Learn more about pond aerators and the Your Pond conference here!

How to Start Planning for DIY Pond Aeration

Want to DIY your own pond?

Looking for the right type of diffuser and other equipment? 

We've got the info you need in our complete DIY pond aeration guide.

Choosing the Installation Location

If you are installing a solar system, then your aerator will likely be located right next to the pond.

If you are utilizing AC electricity, then there are a couple of options:

Running electrical power to the water’s edge:  We have heard of many folks hiring electricians and running power to the water; however, it can be very expensive considering the labor involved and the wire gauge needed to run long distances.

The most common (and recommended) location is near your electrical power source.  It is typically more cost effective to run tubing from your power source to the water’s edge – even hundreds of feet.

Choosing the best HIBLOW model:

Reference your notes on the size and depth of your pond and check out our article regarding choosing the best model and size air pump for your application.  https://www.hiblow-usa.com/2021/04/12/what-size-air-pump-should-i-use-to-aerate-my-pond/

Tubing Type and Size:

If you are planning on installing the aerator at the electrical source, it is most cost effective to buy PVC pipe, reinforced poly, or irrigation tubing and run that to the edge of the water.  If burying the tubing, make sure it can handle the weight of the earth or it may pinch which will reduce or eliminate air flow and put excess pressure on the pump causing it to fail prematurely.

Choosing the right diameter tubing is essential.  Generally, the longer the pipe distance, the larger the diameter of the tubing needs to be to reduce friction loss and limit back pressure.  Also, the more air flow (bigger the pump), the larger the diameter of the tubing needs to be.

Once to the water’s edge, weighted line is most often used, but not required.  Some folks choose to save money by running rigid PVC or flexible poly into the pond.  Of course, this requires bricks or cement blocks to weigh it down.

For detailed information on selecting the best tubing for your pond, please check out the following article: https://www.hiblow-usa.com/2020/06/16/what-size-and-type-of-tubing-should-i-use-with-my-pond-air-pump/

Diffuser Quantity and Type:

The diffuser sits at the bottom of the pond and produces microbubbles that rise to the surface.  HIBLOW typically suggests a medium bubble diffuser that produces sufficient air bubbles for oxygen transfer but also enough power to mix the pond.

Medium bubble diffusers put minimal backpressure on the air pump and “self-clean”.  However, fine bubble diffusers are sometimes the best choice if you have a shallow pond or are trying to grow certain breeds of fish.

The quantity of diffusers depends on your pond size and shape.  For instance, if you have a round pond that is 1/8th of an acre, you may need only 1 diffuser to turnover the pond.  If you have a kidney shape ½ acre pond, you may need 3 diffusers.  Most systems utilize at least 2 diffusers.

For help selecting the best type of diffuser for your pond, check out the following article:  https://www.hiblow-usa.com/2021/05/03/pond-aeration-system-diffuser-options/

We Can Help with DIY Pond Aeration!

Overwhelmed by the options and process for DIY pond aeration? We’re happy to help. If you have any questions during the process, please do not hesitate to reach out to us. Happy DIYing!

DIY Pond Aeration: A Complete Guide

With careful planning and diligence, setting up an aeration system is manageable and can save you a significant amount of money if you do it yourself. Below is a step-by-step guide for installing an aeration system.

Planning for Installation

Determine Your Goal:

What are you trying to get out of your aeration system? Are you trying to reduce algae and other organic matter and improve water clarity?  Are you trying to increase the fish population?  If yes, what type of fish are you trying to grow?  Do they need a specific temperature to thrive?  Are you trying to prevent fish kill in the winter?  This information is important as we work through the set-up.

Power Source:

Choosing your power source impacts the balance of the installation.  Utilizing AC electricity is the easiest and often most cost-effective solution, certainly in the short-term.  However, sometimes electrical power is too far away.  In that instance, solar or wind power can be very effective, but the installation process becomes more complex, and the up-front cost is significantly more.  If solar is of interest, check out our article on DIY solar aeration: https://www.hiblow-usa.com/2021/06/07/diy-solar-pond-aeration/

Pond Size and Depth:

The size and depth of the pond is essential to understand before proceeding as it impacts which size and type of aerator you need, the diameter of the tubing, and the type of the diffuser.  Take careful measurements and note the shape of your pond.

Choosing Aeration Technology:

The 3 most common aeration technologies for homeowners are: fountains, rocking pistons, and linear diaphragm air pumps.

Fountains are visually appealing and provide some aeration to the pond, however they are considered surface aerators only pulling water from the top couple of feet.  They are often used in addition to subsurface aeration. They require a significant amount of energy, so are not typically powered by solar or wind.

Linear diaphragm air pumps and rocking pistons provide subsurface (bottom diffused) aeration.  Subsurface aeration adds dissolved oxygen to the pond, but most importantly, mixes the oxygen rich surface water throughout the water column.  The oxygen starved water at the bottom of the pond is cycled to the surface where it releases toxic anoxic gas into the atmosphere while absorbing oxygen.

Read the entire guide to DIY pond aeration on our website!

We Can Help with DIY Pond Aeration!

Overwhelmed by the options and process for DIY pond aeration? We’re happy to help. If you have any questions during the process, please do not hesitate to reach out to us. Happy DIYing!

Spring Pond Aeration Steps from the Experts

Getting your pond ready for spring?

Make sure you have everything you need for the health of your pond with these steps.

Pond Aerator Spring Start-Up Steps:

•     HIBLOW Linear Air Pump Maintenance
• Clean or replace the air filter. HIBLOW suggests cleaning the filter every 6 months and replacing it once a year.  Wipe off excess dirt and dust in the housing around the filter.
• Check the filter gasket and base gasket. In hot climates or after years of use, the gaskets can become brittle and allow for air to escape reducing air flow into the pond. Gaskets are available for purchase.
•     Check each of the diffusers to make sure they haven’t clogged.
• Clean or replace them as needed. Clogged diffusers can add excess backpressure which reduces air flow and can decrease the life of the diaphragms. For more information on choosing a diffuser that will not clog, check out the following article: https://www.hiblow-usa.com/2021/05/03/pond-aeration-system-diffuser-options/
•     Make sure the weighted line is not clogged with ice.
• Most diffusers have a check valve, but water can find its way into the tubing. If you were to start the aerator with water and ice in the tubing, it will put excess back-pressure on the pump which can cause reduced diaphragm life. Pour 1 cup of isopropyl alcohol down each line. Turn the aerator on to blow out any ice particles.

Read the full list of spring pond aeration start-up steps on our website! 

Taking initiative at the beginning of the spring is imperative to the health of the pond in the summer.  The two primary ways that a pond receives oxygen are from plants and the atmosphere.  Water circulation from a HIBLOW aerator evens out oxygen levels and temperature and pushes water to the surface where it absorbs oxygen.  In addition to breaking down organic matter or muck, a healthy aerobic environment early in the spring helps combat the increasing levels of ammonia as life in the pond starts a new. Contact us for more information!

Spring Pond Aeration

Are you working on getting your yard and pond ready for spring?

Spring pond aeration is crucial to maintaining the health of your pond.

HIBLOW USA recommends pond aeration 24/7, 365 days a year, particularly if fish health and water clarity are a priority.  If your pond freezes over for an extended period, oxygen levels will diminish which can cause fish kill and prevent muck from decomposing.  For more information about what’s happening under the ice and the benefits of winter aeration, check out the following article: https://www.hiblow-usa.com/2021/01/25/pond-aeration-winter/

Taking initiative at the beginning of the spring is imperative to the health of the pond in the summer.  The two primary ways that a pond receives oxygen are from plants and the atmosphere.  Water circulation from a HIBLOW aerator evens out oxygen levels and temperature and pushes water to the surface where it absorbs oxygen.  In addition to breaking down organic matter or muck, a healthy aerobic environment early in the spring helps combat the increasing levels of ammonia as life in the pond starts a new.  Excess nitrates – the bi-product of ammonia – is food for plants, but also algae.  Subsurface aeration is a great tool to prevent and combat algae blooms.

Read more about spring pond aeration on our website!

If you do not plan on aerating your pond during the winter, we recommend preparing the pond the best you can in the fall.  Remove leaves, twigs, branches, and other matter floating in the water as winter nears.  Rake dead plants and leaves from the shore to prevent them from blowing into the water.  The less decomposition happening at the bottom of the pond, the less chance that oxygen levels will deplete to harmful levels.  It is best to move the HIBLOW air pump inside if it is not running in the winter.

Contact us today for more information!

Steps to Calculate Friction Loss in Your Pond Aeration System

Example 1: We have a ½ acre circular pond at 8’ depth.  The pump will be 100’ from the diffuser.  We looked at the HIBLOW pump sizing chart and determined that the HP-80 with 1 medium bubble diffuser is the best solution.    

• Step 1: Add the water pressure and the diffuser pressure together.  8’ deep/ 2.31 = 3.46 PSI.  Our medium bubble diffuser adds 0.25 PSI. Total: 3.71 PSI
• Step 2:  Determine the airflow of the HP-80 at 3.71 PSI. First, click on the HP-80 in the HIBLOW Model column on our website. Under product details, click “download specifications”. Looking at the HP-80 graph (pictured below): the air flow is right around 2 CFM or 57 LPM at 3.71 PSI.  The red line shows how the graph is interpreted. 
•  Step 3:  Reference the HIBLOW USA Friction Loss Chart (link here).  The chart specifies PSI per 100’ of tubing.  The friction loss at 2 CFM or 57 LPM is about .45 PSI for 3/8” diameter tubing or 0.14 PSI for ½” tubing. In this case we would probably suggest going with the ½” tubing to reduce the pressure and increase the airflow.

*The chart is for schedule 40 PVC tubing.  Use the nominal diameter sizes for PVC.  Reference in the inside diameter numbers for weighted tubing.

**If you were running the tubing 200’ for example, you would need to multiply the PSI by 2 to get the total friction loss.  Friction loss at 200’ would be 0.9 PSI if using 3/8” diameter tubing and 0.28 PSI if using ½”.

• Step 4: Calculate the Total System Pressure:  Water pressure + diffuser pressure + friction loss.  
  

For this example, our total system pressure using ½ diameter tubing is 3.85 PSI (3.46 PSI+ 0.25 PSI+ 0.14 PSI).  Looking back at the HIBLOW flow chart/ pressure chart (above), the total airflow entering the pond will be around 50-55 LPM or 2 CFM.  At this point it is important to make sure the airflow fits within the diffuser recommendation range.

Read the full article on our website!

Choose HIBLOW for Your Pond Aerator

We’ve manufactured air pumps for the pond and aquatic industries for over 30 years. We know that reliability, energy efficiency, and low sound levels are all extremely important for your aquatic systems. Whether you’re aerating tanks on fish transport vehicles, operating a commercial fish farm, or just keeping your backyard pond in a healthy condition—you can depend on our HP and XP pond aerators for your application.

Contact us today to find the best pump for your application!

How to Calculate Backpressure for a Pond Aeration System

Calculating or measuring the backpressure is important when planning and maintaining an aeration system. 

 Backpressure and air flow have an inverse relationship – the higher the pressure, the less the air flow. In reverse, the lower the pressure, the higher the air flow. The amount of airflow entering the pond is important to understand when choosing a pump, diffuser, and tubing. To estimate the amount of air flow we need to first calculate the total system pressure. 

Calculating System Backpressure:

1. Calculate water depth backpressure:  Every 2.31 ft. of water depth is = 1 PSI.  Example: the water pressure for an 8’ deep pond is: 8’/2.31 = 3.46 PSI
2. Identify diffuser backpressure:  A popular suggestion on the internet is a fine bubble stone diffuser, which can add as much as 1.5 PSI to the system and can easily plug.  HIBLOW recommends a medium bubble diffuser which typically puts less than 0.25 PSI on the system.  Regardless of which diffuser size/ type you choose, it is important to be able to estimate the amount of pressure the diffuser adds to your system.  Also note the amount of air flow recommended for the diffuser.  If below the minimum flow recommended, the air may not be strong enough to open the pores and “self-clean”.  This information will be important at the end of this exercise. For more in-depth information on diffusers, check out our article: https://www.hiblow-usa.com/2021/05/03/pond-aeration-system-diffuser-options/
3. Calculate friction loss: Air flowing through the tubing will create friction loss (added pressure).  The air pump size, length of the tubing, number of lines, elbows, and diameter of the tubing will all factor into the calculation.

First, we need to figure out the diameter of tubing that is best for your set-up.  As a rule of thumb, for any run within 50’ a 3/8” tube is likely ok.  From 50’-100’ we typically suggest ½” diameter tubing.  Anything beyond 100’ we suggest ¾’ diameter tubing.  However, that is just a rule of thumb and there are exceptions based on the amount of air flow from the pump (pump size) and the back pressure.  

Learn the steps for calculating friction loss on our website!
 

Choosing a Pond Aerator? Consider the WG Series from HIBLOW!

HIBLOW manufactures 3 air pump models for pond applications: HP, XP, and WG Series.  All 3 models are made to the high quality HIBLOW brand standard yet have some differences.  Water depth, the energy source, size requirement, air volume, noise level, and budget may all be considerations when choosing the best model for your pond.

Consider: The WG Series!

The WG Series – specifically designed for ponds and aquaculture – is the culmination of nearly 50 years of engineering innovation.

Constructed with the same precision and quality as the best-selling HP and XP Series, the WG Series is built for continuous 24/7, 365 use. The pond aerator runs on less power than a standard incandescent light bulb with a real-life noise level far closer to a whisper than a normal conversation. The WG can be rebuilt twice for a fraction of the cost of a new pump, extending the life by many years. Not only is a HIBLOW the highest quality option on the market, but it is also the most cost-effective when considering the repairability and longevity.

Whether your goal is to improve the clarity of your water, prevent plant and algae growth, or to grow bigger and more fish, the WG Series can help you reach your goals.

Read the full article on our website!

We’ve manufactured air pumps for the pond and aquatic industries for over 30 years. We know that reliability, energy efficiency, and low sound levels are all extremely important for your aquatic systems. Whether you’re aerating fish transport vehicles, operating a commercial fish farm, or just keeping your backyard pond in a healthy condition—you can depend on our HP and XP series pumps for your application.

Contact us today to find the best pump for your application!

Which HIBLOW Pond Aerator Model Should I Buy?

HIBLOW manufactures 3 air pump models for pond applications: HP, XP, and WG Series. All 3 models are made to the high quality HIBLOW brand standard yet have some differences. Water depth, the energy source, size requirement, air volume, noise level, and budget may all be considerations when choosing the best model for your pond.

HP Series – best for deeper ponds up to 10’

The HP Series has been around for a few decades and is the most reliable and longest-lasting aerator on the market. Larger than the XP and WG, the series uses more electricity, but is very quiet and robust – able to handle up to 10’ in water depth. The HP Series has the widest range of pump sizes aerating ponds from 7K gallons up to 2 acres. Since it is outdoor UL rated, it can be left out in the elements, however we do suggest covering the pump for longest service life.

XP Series – best for energy savings/ solar applications

HIBLOW engineered the smaller XP-Series utilizing a high-powered rare-earth magnet for the shuttle rod – which the diaphragms attach to. The design requires less copper for the electromagnets and therefore runs on less electricity than the HP Series. The series is an excellent choice for those seeking energy savings or for solar applications when wattage is a major factor. The XP Series operates at about the same sound level as the HP Series and is outdoor UL rated. It has 3 pumps sizes aerating ponds from 16K gallons up to 1/2 acre. HIBLOW recommends using the XP for shallow ponds up to 6-8’ in depth.

WG Series – best for the budget

The Water Garden Series was developed specifically for pond applications. To keep the cost down, the WG Series is molded with a plastic outer housing and therefore should be placed under a cover. It is louder than the aluminum housed XP and HP Series yet still operates at a dB level far less than an indoor conversation. The WG Series is more energy efficient than the HP Series. Like the XP Series, it has 3 pumps sizes aerating ponds from 16K gallons up to ½ acre. HIBLOW recommends using the WG for shallow ponds up to 6-8’ in depth.

Have more questions about pond aerators? Read the full article on our website!

We’ve manufactured air pumps for the pond and aquatic industries for over 30 years. We know that reliability, energy efficiency, and low sound levels are all extremely important for your aquatic systems. Whether you’re aerating fish transport vehicles, operating a commercial fish farm, or just keeping your backyard pond in a healthy condition—you can depend on our HP and XP series pumps for your application.

Contact us today to find the best pump for your application!

Pond Aerator for Fish Kill Prevention Set-up Tips

Why aeration in the winter is critical to the health of a pond:

When a pond owner buys a linear air pump, it is often in the spring or summer when they are looking to beautify the water and/ or enhance fish growth. Yet the most important season for aeration may be the winter. Sub-surface aeration is essential for cleaning up autumn debris, preventing winter fish kill, and disrupting the formation of ice.

Why subsurface aeration?

Subsurface aeration is an energy efficient and highly effective way of increasing dissolved oxygen levels and circulating it through the pond. The circulation creates an opening in the ice which allows the deadly gasses to be released, and for sunlight to reach aquatic plants. There is no better way to keep your fish alive and continue the decomposition of organic material while at the same time offering an opening in the ice for wildlife to stop by.

It’s important to move the diffuser away from the deepest part of the pond. If you have a six-foot deep pond, move the diffuser closer to the shore to a depth of about three feet.

The warmest water in the pond is at the bottom and is where fish reside in the winter. If the diffuser is placed at the deepest part of the pond, it will circulate the warm water and evenly distribute the cold water – disrupting the natural habitat.

Moving the diffuser closer to the surface also makes it easier to create a hole in the ice and makes the pond safer for humans or animals. They can more easily get out of the pond if they were to fall in through the hole in the ice.

If possible, it’s best to keep your aerator in a warm building or under some type of shelter. Pumping warm air into the pond will actually increase positive results.

Read the full article about using a pond aerator for fish kill prevention during winter on our website!

Choose HIBLOW for Pond Aeration

We’ve manufactured air pumps for the pond and aquatic industries for over 30 years. We know that reliability, energy efficiency, and low sound levels are all extremely important for your aquatic systems. Whether you’re aerating tanks on fish transport vehicles, operating a commercial fish farm, or just keeping your backyard pond in a healthy condition—you can depend on our HP and XP series pumps for your application.

Contact us today to find the best pump for your application!

Fall Pond Aeration

At HIBLOW USA we receive many calls each year at the end of summer asking if pond aeration is needed in the fall, or if they should turn off our pump and store it until spring.  They also ask if the pump can handle colder temperatures.  The answer is yes to both.  Many argue that fall is the most important time of the year to run the pond aerator.  Sudden drops in temperature, a reduction in sunlight, strong storms, and an increase of organic debris all contribute to reduction in oxygen levels that directly impact the health of the pond.

Reduction in oxygen from plants

Aquatic plants, due to photosynthesis, create oxygen for ponds.  Naturally, as the cold sets in and there is less sunlight, algae and other aquatic plants start to die off or go dormant.  The green plants that survive produce much less oxygen because of the reduction in sunlight.  

Increase in organic matter

Organic debris is most prevalent in the fall.  As leaves change color and drop to the ground, they and other dying aquatic vegetation are swept into the pond.  Fertilizer and decaying insects/ animals also find their way into the water, further impacting the water composition.  Nature uses beneficial micro-organisms (aerobic bacteria) – which require oxygen to live and thrive – to decompose organic matter.  With the influx of debris in the pond, more oxygen is needed to speed up the decomposition.  If there is not sufficient oxygen, the organic matter will be slow to decompose and can build up at the bottom of the pond.  Not only will this make for a major spring cleanup, the condition can contribute to fish kill in the winter.  

Want more tips for fall pond aeration? Read the full article on our website!