Pond Boss Forums MANAGING AN EXISTING POND Evaluating and adjusting fish populations Fertilizer?

If it is granular (not powder water soluble) then apply 40 lbs/ac. You will need to make sure not to just throw it out once on the soil you will get little phosphorus in the suspension going into phytoplankton production. Some folks silt bag and lay on pond bottom or the old way is building a platform. If it is water soulble and I hope it is apply 8 lbs/acre if vis. is greater than 36" and 4 lbs/ac when you get the bloom down to less than 30 inches. Remember strive for vis of 18-24 inches to maximize fish production and keep from overdoing it with possible fish kill.