If I only wanted to aerate the top half of my water column in Winter how would I do that? I would like to"turn off" the bottom of the pond and eliminate or severely limit it's capacity to consume DO. Water is 20' deep at the deepest. Water temp is 33 degrees.
Could I place diffusers in 4' of water and that would do it or would that cold water mix on down to the bottom anyway? Would discs have to be suspended 18" or so below the water surface??
Bill Cody has told me cold water mixes much easier and farther than warm water. MNFish has video of significant water movement under ice 120' away from a single diffuser being pushed by 1.00-1.25 CFM. I will be pushing double or more CFM per disc.
Is it even possible for me to not mix the bottom water?
