Dark stains on the bottom surface of the pool
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Chris Chambers
Dark stains on the bottom surface of the pool
There are dark stains on the bottom surface of my pool. Is it algae? The surface is far from smooth being painted concrete. I presume the paint is a formula especially for pools. Scrubbing with a medium soft brush has no effect. Any suggestions. Hopefully Chris
it's going to be black algae or a mineral/metal problem. You can try 2 things which will let you know.
1- take a chlorine tab and rub spot with it and then let it sit on top of it for a few hrs, if it starts going away it's black algae and you can get granular treatment for it which sits on top of it after you have scrubbed with a metal wire brush.
2- take a white sock put in 1/2 pound PH decreaser and let it sit on spot for 15mins. if it starts going away its a mineral/metal problem and you can add metal remover 2-bottles to start. You would have to drop PH to 6.5 to 6.8 and scrub every day until gone. Then readjusting PH back to normal.
1- take a chlorine tab and rub spot with it and then let it sit on top of it for a few hrs, if it starts going away it's black algae and you can get granular treatment for it which sits on top of it after you have scrubbed with a metal wire brush.
2- take a white sock put in 1/2 pound PH decreaser and let it sit on spot for 15mins. if it starts going away its a mineral/metal problem and you can add metal remover 2-bottles to start. You would have to drop PH to 6.5 to 6.8 and scrub every day until gone. Then readjusting PH back to normal.
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