Muddy Fork, Calculate your total gallons in your pond,(approx 325,000 per acre ft) and find out what your turnover is on your aeration system for the depth you are going to set the diffuser. Example > some diffusers test out at 4100 gallon per minute at 8 ft with 1 CFM etc.Then decide how often you want to turn your water over and see if your system needs to run 24/7 (or longer) if undersized.Your aeration equipment supplier should have all the independent testing of their diffusers to answer these questions. Good Luck Ted
