Black Mold under Liner

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Pool Newbie
Pool Newbie
Posts: 2
Joined: Mon 20 May, 2013 07:11
My Pool: 16 x 32 inground vinyl liner sand filter
Location: Mt. Airy , MD

Black Mold under Liner

Postby drg123 » Mon 20 May, 2013 08:21

We have a black mold under our liner that shows up as a black stain in the deep end. It seems to fade out when I open the pool and I beleive the problem is due to cracks in my concrete decking allowing rain to get under the concrete and find it way under the liner. I repaired most of the damaged concrete two years ago and the stains have are not as bad. I am getting ready to install a new line this year and wondering if I should treat the gunite prior to installing the liner. I have read that clorx will kill the mold but I'm worried that it could damage the liner.
Does anyone have any experience with this problem. Thanks in advance.

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