Pond Boss Forums MANAGING AN EXISTING POND Evaluating and adjusting fish populations Mississippi pond management options Input welcome

If you have a good bloom you don't need extra N. Get the water and soil tested and that will tell you for sure. I do have one pond that I put some N in to jump start things and it works. You could try water sol pond fert as it has some (small amount) of N. Only a small % of ponds need extra N.