Frank - this product needs to be applied by a profesional applicator so you would need to contact someone in your area for a quote. It would be more cost effective to invest in an aeration system for your 3 acre pond unless your pond is extremely shallow and aeration isn't an option (less than 4 feet). The AquaKler can last for 2 - 4 months depending on conditions (pH, BOD)Maybe longer - we're not sure, which is why we are testing.
