I once again wanted to really thank this community. When I opened my pool back in may it was a green mess. I also had an elderly friend with a green swamp, today I finished up a second friends green pool. With the help of this forum I have become a true believer and turned two of the pool owners this way. Thank you so much for being just wonderful people. The photos below are of the pool I just finished up. It took less than a week to go from green to clean