On recommendation by Walt Overton, I put in a total of 50 lb of powdered fertilizer into my 7 acre pond. Average depth about 10 - 12 feet, maximum depth 25 feet near dam. Previously we could see down about 40 inches, very light green water. pH 6.5, alkalinity in high 40s.
Is that a high dose, low dose, or about average?
Sorry, Shields, this was meant for Rainman.