I heard about this type of aeration at a pond seminar this past weekend and I'm curious if anyone has any experience with it. Basically it's aeration the water below the thermocline without disturbing the thermocline. I have a small deep pond and with conventional aeration, last season it mixed well. For whatever reason I never picked up any fish in the deeper water using the fishfinder. I did however have O2 levels over 6 ppm all summer at depth. So it seems the bass and bluegills are going to inhabit the shallow waters anyway, if hypolimnetic aeration is effective at oxygenating the deep section and it stays cold, why can't I keep trout in the deep and warm water fish in the shallows? These units are pricey so I'd have to build my own but the potential seems worthy. Any experience out there or opinions?

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