I wouldn't recommend beginning an aeration plan with a bottom-type diffuser this time of year. If your pond has stratified (cooler, denser water on the bottom with no oxygen), you'd be flirting with disaster by trying to mix the water this time of year. I have limited experience with using aerators, but I do know of one lake that has significantly improved because of the diffusers. The diffusers are turned on during early April and continuously run through mid-October. There is always the possibility that your pond would be O.K. if you went ahead and got things started now, but I would take the conservative route and wait. I would definitely get one installed but not now.


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"Imagination is more important than knowledge" Albert Einstein