Kelly B, I'm curious as to why you are going the fertilization route. Personally, I don't want pond weeds and the overhead of maintaining them. This is probably a stupid statement, but have you tried overstocking your forage base, and feeding them to excess at the same time? I'm only guessing that if you feed your fish, you gain both the fish weight gain benefit, along with the increased nitrates that would provide a bloom.
Surely ewest or another PB master can lead you in the right direction, and bust my chops
