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Best rock for waterfall into chlorine gunite pool

Posted by crisha zone 7 (My Page) on
Wed, Oct 21, 09 at 21:32

The existing rock, which i believe is fieldstone, is reacting with the chlorine and causing brown stains on the walls of my pool. The builder say it is the magnesium. I need help knowing what kind of rock to replace it with that won't get slimy and not cause the staining problem i am having. Thank You.


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RE: Best rock for waterfall into chlorine gunite pool

  • Posted by bahia SF Bay Area (My Page) on
    Sat, Oct 24, 09 at 12:44

You would probably get better information if you talk with local pool installers and local rock yards in your area to find out what is available and non-reactive. Less porous rocks will tend to stay cleaner, but if the waterfall is using chlorinated water, you shouldn't be having a problem with algae growing on the rock in any case.


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RE: Best rock for waterfall into chlorine gunite pool

  • Posted by lee1 z7 Long Island (My Page) on
    Wed, Nov 4, 09 at 17:13

A widely used stone for waterfalls in the northeast is pennsylvania moss rock which has a nice natural look and does not create the problems which you are describing here.


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