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Thread: New to TFP - High PH

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    Join Date
    Jul 2013
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    Rancho Cucamonga, CA
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    New to TFP - High PH

    I'm a convert. I've switched to liquid chlorine from pucks and slammed my pool effectively once. The water has never looked as beautiful. However, my PH is pretty high right now. Here are my readings from today:

    CL - 6.5 (added some this morning)
    PH - 8.2
    TA - 90
    CH - 340
    CYA - 38

    I should be lowering PH right? Should I add stabilizer to lower PH and increase CYA?

    I'm a little confused. Thanks for your help.
    ~20,000 IG Roman Shaped Plaster Pool with Spa
    Cartridge Filter (Hayward C4025)
    Pentair Supervlow VS 342001
    TF-100 Test Kit

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    Mod Squad woodyp's Avatar
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    Re: New to TFP - High PH

    You can lower your Ph quickly with muriatic acid. Depending where you are, your cya could be fine. Judge it by your FC daily loss.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
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    linen's Avatar
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    Re: New to TFP - High PH

    Adding stabilzer (cya) is not a good way to adjust ph since the stabilizer does not disolve quickly and doesn't move ph much in the amounts you could use.

    Use Muriatic Acid to adjust ph. If your ph is reading 8.2 it can actually be much higher. I would use poolcalculator.com to calculate how much you need to go from 8.2 to 7.4, then add it in front of a pool return and test the water again in 1 hour. Redose and retest as needed to get down in the 7.5-7.8 range.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Richard320's Avatar
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    Re: New to TFP - High PH

    Just adjust pH using Muriatic Acid. You'll probably need to start doing that - the pucks were taking care of it for you as they're very acidic.

    I'd hold off on raising CYA. That way you have a little breathing room if you want to leave town for a few days. You can load a floater with pucks to keep that sparkly pool going in your absence without worrying about overdoing the CYA that way.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Join Date
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    Re: New to TFP - High PH

    Thanks guys, I'll give it a shot in the morning.
    ~20,000 IG Roman Shaped Plaster Pool with Spa
    Cartridge Filter (Hayward C4025)
    Pentair Supervlow VS 342001
    TF-100 Test Kit

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