I have an 1/2 acre pond with 500 coppernose bluegills and 500 channel cats. The pond's visibility was maybe one inch, and now after the treatment it is 4 feet. I pumped 300 lbs of aluminum sulfate and needed 200 lbs of lime due to the PH. It is holding at 7.5. I only know what I have read on this site and I'm satisfied with the results. The only thing is my fish wont come up to feed, I havent seen my catfish or bluegills since, which has been a day. I see lots of flathead minors along the bank but that's it. I'm hoping they are all well, we shall see.