I am a new member from the Austin, TX area. I have used pool services for many years but have not been satisfied with the service for a while so I decided to take it over myself. For various reasons beyond my control my pool became a green swamp. I started by using powered shock and got pretty good results except for patches of slimy growth on the bottom and the steps. I discovered that I could treat them with chlorine tablets in socks laid directly on them. Then I had to leave town for a little over a week and came back to a pea soup green pool. The I discovered this site and the SLAM treatment. My pool water is now blue, but cloudy. I am letting it filter and back washing daily. I still have some of the patches on the bottom that I cannot remove with a brush or vacuum, and I think I have some black algae, but pool is much better. It has taken me over 2 months and hundreds of dollars to get to this point, but I am optimistic that I can win this battle.