Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants PB Article needed to explain this

"Raising Trophy Bass" (going through it currently in the reading room) goes over basics for fertilization. Do not fertilize if alkalinity is below 20 (whatever the units are), phosphorus is the limiting nutrient in most ponds, etc. I also recall hearing from somewhere else (last year's conference?) that fish feeds provide almost no phosphorus, to prevent unwanted blooms/plant growth in fish farm settings where heavy feeding provides all the food for the fish.