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Thread: Help with yellowing plaster in the bottome 6 inches of spa

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    Help with yellowing plaster in the bottome 6 inches of spa

    Our pool and spa are less than 1 year old. The plaster is cody pebble and I recently noticed that the bottom 6 inches of the side wall in the spa is yellowish. We had an issue with an electronic valve that drained the spa briefly last week so I poured bleach along the yellow ring prior to re-filling the spa but that didn't seem to diminish the yellowing. The valve problem did diminish chlorine levels briefly but that was after I had noticed the yellowing. Any suggestions? Many Thanks from Austin

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    Mod Squad Bama Rambler's Avatar
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    Jun 2009
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    Re: Help with yellowing plaster in the bottome 6 inches of s

    Welcome to TFP.

    Try rubbing a vitamin C tablet on it and see if that lightens it. If it does it's metal staining. If it doesn't try holding a trichlor tablet on it.
    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
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    Re: Help with yellowing plaster in the bottome 6 inches of s

    Thanks, I'll get some vitiman C & give that a try this weekend. Cheers

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