We had been using Scott's dissolvable pond fertilizer the last couple of years with great success but decided to try SE this year. We put them in in April and after getting a good bloom we are back to clear water again already. Scott's would clear up as well but wouldn't usually get clear until October or so. Don't know if it is coincidence or not but I think Scott's performed for us better. I have ordered some more SE so I will see what happens this time.
