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Thread: I would like to get my pH down so I can stop getting stains

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    I would like to get my pH down so I can stop getting stains


    have you been able to get rid of the stains and keep them from reoccurring now?
    Originally in this topic. Split off into a new topic. JasonLion

    Can someone help me with the following? :

    Here are my numbers:

    TA: 90
    CH: 250

    pH: 7.4 - 8.2

    I have the same problems with my 3 year old fiberglass pool, and this year is extremely terrible. Muriatic acid takes the stains away, and putting sequesterant seems to help. But this year is different.

    I have to put pH- every day. Once I put pH-, the level drops to 7.4. But the next day, it goes up to 8.0-8.2. It happens every day without a doubt, and it doesn't rain over night. The only thing is I put a little bit of chlorine in. (granules)

    I would like to get my pH down so I can stop getting stains, but I just can't get my pH that low. I can't even get it to stay at 7.4.

    I know that the municipal water has no iron in it, so my only guess is all the earth used in the landscaping around the pool gets into the water, and I think there's iron in the soil.

    Does this make sense?

    I hope someone can help.
    Thanks a lot
    14X28 I/G steel wall hump back Kidney 3'-5', 30mil vinyl liner,92" spill over spa, 1hp Hayward Super 11-pool circ., 1 hp Hayward super 11- spa booster, Hayward Tristar waterfall for three 24" sheer descent waterfalls , Hayward Swim Clear Cartridge 425sqft, Hayward H-series 250,000 BTU N/G, Pro-logic PS8, T-Cell, Hayward Aqua Vac Robotic

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: I would like to get my pH down so I can stop getting stains

    Welcome to TFP!

    Could you give us some more information. Do you have a complete set of water test results? What do you use as a source of chlorine? There are several chemicals that "granules" might contain. Does your pool have any water features (fountain, spa, waterfall, etc) and do you use them?
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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