Thanks for the input guys. Sorry, I forgot to include the background. Pond built in 2008: 2.5 acre, avg depth 6 ft with deepest water at 28 ft, pond runs pretty clear-secchi reading usually between 24-36", didn't have a good bloom last year but I didn't fertilize, goals are raising a healthy fishery with emphasis on large bass, I will be stocking Tilapia later this spring when Rex heads down this way.