I have read alot of good information on this site re:aeration. I have several small ponds here on the gulf coast of Florida My first Pondis approx 1/4 acre in size and about 7 feet max depth in the middle. I want to install a bottom diffuser as I already have a surface aerator. Does anybody know WHAT size stone diffuser I would use in this pond or if I need more than (1). My reason for doing a bottom difuser is that we have very hot sunny days and I want to De-stratify the water if possible. My other pond is about 1/2 acre and max depth is approx 6 feet. Thanks for any advice. DL