What about the idea of shallow water diffuser running all the time that keeps open water, along with a deep diffuser that only runs short periods and only a portion of the day (separate pump on a timer)?

From what I have read about super cooling the BOW on older threads, cooling all the water down and stressing the fish is the danger. The Earth warms the deeper water.

But what if a person only ran the deep diffuser enough to transfer only a portion of the water at a time, but not enough so it would cool off too much and the Earth would again have time to keep it warm enough.

A possibility? Would this be helpful?

John

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