A pond surrounded by woods and its organic inputs creates a significantly higher biochemical oxygen demand thus requiring more water movement (oxygenation). Also regularly feeding fish or fertilizing are very important factors that contribute to longer aerator run times. I assume the system was probably designed with the intent for it to run 24/7 to create the proper turnover rate? Implementing 'over kill' in designing an aerator provides a greater opportunity for reducing aerator daily run time. Depending on the system specs and the amount of organic inputs are the two main items that will contribute to if the system can operate less than 24 hrs/day. There are also other important factors to consider. Do you have a way to measure bottom water temperatures in the pond's deepest area where I assume you have one of the diffusers?.

Last edited by Bill Cody; 04/12/11 04:08 PM. Reason: edits

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