The ponds will be specifically for bass fishing. There is no watershed for these ponds. The water supply is strictly by pumping. I am considering a 4' average depth with deeper sections where soil will be excavated for levee construction. We are 10-15 miles from the Gulf of Mexico so cold weather is not a big consideration, but hot weather is. I have had both recommendations, aerate and don't worry about it on a pond that big. I was considering some type of emergency system that is portable. I did not receive the name of the people who you said could give me some help. Could you please send the information again? Thanks