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Thread: Recovery From Houston's mega-rain event

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    Join Date
    Feb 2015
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    The Woodlands TX
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    Recovery From Houston's mega-rain event

    You have no doubt seen several posts regarding the 8 to 20 inches of rain we got in Houston on Sunday and Monday. I fared better than many, in that I only had a thin layer of dirt that I cleaned up with my Dolphin and my net. Chemistry is a little different issue. Yesterday, my chlorine was at 1, and pH at 8.2. I put in a gallon of clorox. This afternoon, my FC was at 8.5 and CC at 0.5. pH was at 7.5. I think what happened is that I tested rain water that had not thoroughly mixed with the pool water, giving me suspect results. Today seems like better numbers.

    I went ahead and tested TA and CH. TA is 60, down from 80. CH is 150, down from 225. My temptation is to let the water circulate until the weekend, and see how everything washes out. If those numbers stick, should there be any concern?
    12,000, IG 1992, 4.5' center/3' each end, Pentair FNS-60 DE Filter (2015)
    PebbleSheen installed 2015
    Pentair Superflo VS installed May 2016
    TF-100 Test Kit
    Dolphin Nautilus Plus Robot

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    Richard320's Avatar
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    Jan 2010
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    San Dimas, CA (LA County)
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    Re: Recovery From Houston's mega-rain event

    Quote Originally Posted by RedScare View Post
    You have no doubt seen several posts regarding the 8 to 20 inches of rain we got in Houston on Sunday and Monday. I fared better than many, in that I only had a thin layer of dirt that I cleaned up with my Dolphin and my net. Chemistry is a little different issue. Yesterday, my chlorine was at 1, and pH at 8.2. I put in a gallon of clorox. This afternoon, my FC was at 8.5 and CC at 0.5. pH was at 7.5. I think what happened is that I tested rain water that had not thoroughly mixed with the pool water, giving me suspect results. Today seems like better numbers.

    I went ahead and tested TA and CH. TA is 60, down from 80. CH is 150, down from 225. My temptation is to let the water circulate until the weekend, and see how everything washes out. If those numbers stick, should there be any concern?
    Yes. Your CSI is probably quite negative, low enough to etch plaster.

    You need to raise the CH a bit. Don't forget that if everything else went down by 1/3, so did your CYA. I think the TA will be okay and you already have pH and FC under control.
    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.
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    Join Date
    Feb 2015
    Location
    The Woodlands TX
    Posts
    45

    Re: Recovery From Houston's mega-rain event

    Thanks, Richard. The funny thing about the CYA is that I already had a sockful in there while the storm was ongoing. Of course, it likely just floated out the overflow along with my calcium.
    12,000, IG 1992, 4.5' center/3' each end, Pentair FNS-60 DE Filter (2015)
    PebbleSheen installed 2015
    Pentair Superflo VS installed May 2016
    TF-100 Test Kit
    Dolphin Nautilus Plus Robot

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