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Thread: white stains in fiberglass pool

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    white stains in fiberglass pool

    Hello! I've fiberglass pool for two years and everyrhing was excellent. But three month ago all the surface under water started covering with white stains (not even stains but fur). I can't get rid of it with ordinary chemistry. At first I thought it was a calcium, tried Decalcit Super, no results. water testing results show normal level of Ca, Na, Mg. When surface is wet pool's colour nearly normal but when it's dry it's white.
    What can it be & how to get rid of it?
    15k diving pool. Originally built in 1979. Rebuilt, except shell in 2008. mini pebble, faux rock slide with jumping rock, 2 1hp whisperflo pumps, tr140 sand filter. Flagstone coping. raised wall with stack stone.

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    frustratedpoolmom's Avatar
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    Re: white stains in fiberglass pool

    Fur? What color?

    Can you post a full set of test results, and tell us how you obtained the results (drop kit, strips, pool store).
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    Mod Squad Bama Rambler's Avatar
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    Re: white stains in fiberglass pool

    White fur sounds like the gel-coat is wearing off and the fiber is coming through.

    Will it brush off?

    Do as FPM requested and tell us how you normally maintain you pool as well.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: white stains in fiberglass pool

    Quote Originally Posted by Bama Rambler
    White fur sounds like the gel-coat is wearing off and the fiber is coming through.

    Will it brush off?

    Do as FPM requested and tell us how you normally maintain you pool as well.

    You say gel-coat is wearing off but I don't see fiber on the surface. By the way there are blue spangles in the middle coating of gel & when surface is wet it's sparkle like a new one.

    it can't be brushed off only with help of flint-paper (with upper layer)

    Water's decontaminating with electrolyses (titanium electrodes and copper electrodes) of NaCl
    15k diving pool. Originally built in 1979. Rebuilt, except shell in 2008. mini pebble, faux rock slide with jumping rock, 2 1hp whisperflo pumps, tr140 sand filter. Flagstone coping. raised wall with stack stone.

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