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Thread: How to acid wash pool walls

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    How to acid wash pool walls

    I have a 5 yr old gunite pool that has staining for calcium hardness. Pool was filled with deep well and from the advice of waterbear we refill from our treated water. We have a 12-13,000 gal pool with spa. Walls and bottom are gray in spots. No damage to the plaster, just ugly! We have drained most of the pool due to other work done at our home. Thought it would be a great time to clean up the ugly stains. Any advice would be greatly appreciated. We did acid wash out brick house after the construction and it turned out great. We had a soft faced bring so had to be very careful.

    L Stone

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    No P in my ool's Avatar
    Join Date
    Jun 2007
    Logan IA

    Re: How to acid wash pool walls

    What we used to do was have someone slowly pour the acid over the stains while the other person scrubbed with a stiff brush. Then rinse with lots of water. best to do this when there is a breeze and stand up wind. You probably should wear some ppe. Maybe goggles, some rubber gloves and rubber boots.

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    Join Date
    Mar 2007
    Coastalish 'down easter'

    Re: How to acid wash pool walls

    Welcome to TFP!!

    It's funny, just the other day this thread got bumped over on Pool Forum, it contains some specific advice on DIY acid washing. (Waterbear and I added some practical advice at the bottom of the thread)

    Be safe with the acid and don't float the pool!!
    Luv& Luk



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