I too thought it was probably over fertilization but I followed all the recommended directions for the 1st 3 applications 2 weeks apart and actually used less than the recommended amounts of the prosol water soluble fertilizer. And the bloom didn't show until 1 week after the 3rd application, about as expected.

Anyways. I've not added anymore prosol, but still only have my floating bucket, and my water clarity has remained at approximately 2 to 3 feet. The little red particles I mentioned before have not been seen since the post. I do feed but 2 to 3 times a day, but not much at this point only about 1.5 lbs per day total. So I'm not sure if I should add any new prosol to attempt to kick off a bloom again and if so, how much to actually use now for the 1.5 acre pond.

John