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!