Black Algae in grout.

Algae problems in swimming pool water.
Green (cloudy) water or slimy pool walls.
Black algae. Mustard algae. Pink or white pool mold.

Black Algae in grout.

Postby help » Thu 09 Oct, 2008 21:31

will drianing the pool and let the sun shine on it for a week or two kill it..

chem geek
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Postby chem geek » Sun 12 Oct, 2008 05:09

No. You need to expose the black algae to high levels of chlorine and need to frequently scrape the surface (using a metal brush if you've got a plaster surface) to remove the slime layer to expose the lower depths to the high chlorine levels.

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