I am at my wits end trying to keep my pond clear!! i have a 2500 gallon Koi pond and I think I have tryed everything. I have drained it all and cleaned it with green Clean, partial water changes, eco fix, algea fix, flox, Plants you name it I have tryed it. Can anyone give me tips on how to keep it clean and clear? It is in shade also so that helps with the algea growth. My water conditions are all ideal also. Please Help!!:goldfish: