Great info, thank you. Is there a company you would recommend or 2 that I look at? Pond is .375 acre or 3/8 acre deep end 9 foot middle 6 to 7 shallow end 4 to 5 foot with the deep end being the widest part of the pond and that is where the diffuser is going. I was just trying to stay in the 2 to 3 K range and not 4 to 5 thousand range.