something growing on the walls of my pool....... and bottom

Algae problems in swimming pool water.
Green (cloudy) water or slimy pool walls.
Black algae. Mustard algae. Pink or white pool mold.
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Joined: Wed 25 Jul, 2007 08:02
Location: Des Moines, Iowa

something growing on the walls of my pool....... and bottom

Postby med88 » Wed 25 Jul, 2007 08:42

It looks like light brown dirt but if you get close, some small areas have some red/purple mixed in. Scrubbed and scrubbed - can't brush it off. I did the test with Vitamin C - no change. Took a chlorine tab and rubbed and rubbed - no change. I've super-shocked it and also added algaecide - no change. I have no idea what this is - can anyone help? Water tests at normal levels. Pool is concrete, 16x32 -- this started along the wall in the deep end and is creeping to the shallow end. It is also on the bottom where the pool takes a nose-dive to the diving well.

PS I live in Iowa, in case geographical are makes a difference.

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Postby Backglass » Wed 25 Jul, 2007 10:00

Sounds like some kind of algae bloom. Is it slimy to the touch?

Please post your test numbers so we can double-check.
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Postby Guest » Wed 25 Jul, 2007 17:11

Chlorine: 5 (I put 6 bags of shock in last night so this being a little high
today makes sense).
Br: 10
PH: 7.2
Alk: 190ppm

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