I have a 1.5 acre pond (just finished the Dam), with a maximum depth of 19 feet. I will be adding closed loop Geothermal to it. I would like to stock it with SMB, YP, and RES. I will also be using it for swimming. I have been reading here about the benifits of aeration for the fish and cleanliness, and I think this is the way I want to go. Would the diffuser system be best for my application or a floating fountain? It looks like the diffuser systems are cheaper to operate. I am also curious how each type would effect the efficiency of the Geothermal loop transfer. Should I not aerate because of the Geothermal loop?

Chuck