Are you sure you pond is 20 to 25 feet deep at .45 acres or are you estimating? I has to be a very steep bank in that area!
I use a 1/4 hp. rotary Gast for three 1/10 acre ponds all approximately 7 to 9 feet deep. One is 7 feet, the other is 8 feet and the trout pond is 9 feet deep max. However in the shallower two the diffuser is in the middle in slighty shallower water as the ponds are sloped to one end for easy draining. I run one airline to each pond and regulate the flow with levers. The air flow will go to the shallowest pond so one has to open up the air on the deeper one to get it to even out.
Last edited by Cecil Baird1; 04/21/09 08:20 PM.
