Purple Walls - Very High CYA

What is floc, clarifier, stabilizer, cyanuric acid,
algaecide, brightener, dichlor, sodium hypo,
sodium bisulfate, ....??
Tom B2
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Purple Walls - Very High CYA

Postby Tom B2 » Fri 30 May, 2008 13:57

I've read some of the posts that relate to this issue. I've come to understand that I'll need to reduce the CYA through draining to get the level under control.

But, I have questions:

1) Will lowering the CYA cause the purple to disappear?
2) Assuming "NO" is the answer, what must I do to remove the purple? It does not seem to brush off. My pool is a one piece fiberglass, so draining it to scrub or clean the sides would not be an option.

I have a cartridge filter
It is a small pool ... 6 to 7k gallons
Foolishly have a tab automatic chlorinator, and so I will want to know of a Tab type that will not cause this CYA problem ... if such exists.


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Postby muss08 » Fri 30 May, 2008 19:05

What is your current CYA level? Have you had your water tested for manganese? Purple problems often point to this.
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