white chalky like substance at bottom of pool

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white chalky like substance at bottom of pool

Postby ruthie » Wed 19 Jul, 2006 07:04

I hope you can help. I have this white residue laying at the bottom pool. I think its from shocking it when it was so hot.. Can anyone tell me what it is and how to get rid of it.. I vacuum and it puts it back in .


Postby 21958 » Wed 26 Jul, 2006 09:47

Sounds like it could be dead algea which the filter has avery difficult time filtering out. One option is to vacuum to waste. With a sand filter what I have done is use a clarifier that gets added to skimmer and forms a gel over top of sand and helps it filter better. You will still have to back wash more often as dead algea is very fine.

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