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Thread: CH disappearing

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    Sidecarist's Avatar
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    CH disappearing

    I did a quick search and didn't find an answer to this.

    I've been away for 3-4 weeks and letting the SWG take care of the pool and it looks great. Before I left I added borates and overshot a bit. The strips indicate 80ppm. I had no trouble other than that and the pool looks and feels great. I guessed at the run time for the SWG after a couple days of testing and got it close. After so long FC was 12 but at least not 30... I'm letting it drift down now and will make an adjustment to get it in range.

    When I ran a full set of tests I found that my CH was down from 230 to 200. I'd say water loss was the problem, but my Cya is right at 60 as before I left. I plan on raising it to 260-280 to get in to the suggested range using TFP numbers in poolmath.

    I don't think this is a problem, but inquiring minds would like to know...

    Current numbers are:
    FC 7.5
    CC 0
    PH 7.6
    TA 70
    CH 200
    CYA 60
    Bates 80
    Salt 4000

    I know my salt is high but I can live with that, and I'm keeping the Cya on the low side to allow me to SLAM easier if I need to because I travel so much. Extra run time is affordable in TN.

    Thanks!
    12,000gal Fiberglass In Ground, Pentair 1hp single speed pump, and Pentair 100sq/ft single cartridge filter. Intellichlor IC-40 SWG, Roof mounted 400ft solar heat loop, Zodiac MX8 Elite cleaner w/leaf canister
    Taylor K-2006-C, Speed Stir, Taylor K-1766 salt test

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    Richard320's Avatar
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    Re: CH disappearing

    You have a fiberglass pool. There's no reason to worry about low CH. The suggested values for the SWG are to ensure the CSI stays in the neutral zone. But that doesn't matter to you. You don't have plaster to dissolve. You only need to worry about high CSI, because a fiberglass pool can still develop scale even if it won't etch. You're fine. Go swimming.
    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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    Texas Splash's Avatar
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    Re: CH disappearing

    Your numbers are indeed good. You're very close to the minimum required for a SWG pool (220-320), so unless your fill water is exceptionally soft, you'll add more CH with the hose soon as summer approaches anyways. Have a great day.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
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    Sidecarist's Avatar
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    Re: CH disappearing

    Oh I'm going swimming it's 95 here today! The water is clean clear and I never go to the pool store!

    I have a grouted tile water line so I want to keep it in range to protect that. I was just curious about where it went...

    Thanks guys!
    12,000gal Fiberglass In Ground, Pentair 1hp single speed pump, and Pentair 100sq/ft single cartridge filter. Intellichlor IC-40 SWG, Roof mounted 400ft solar heat loop, Zodiac MX8 Elite cleaner w/leaf canister
    Taylor K-2006-C, Speed Stir, Taylor K-1766 salt test

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    TFP Guide

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    Re: CH disappearing

    As other said levels are fine.

    My only concern would be did the level drop due to a leak. If you do have a leak it is an extremely slow one and not much of a concern, I would do the CH test again in another 3 to 4 weeks if the level goes down any more might be worth a bucket test and an inspection of the solar for bad vacuum breaker or minor hole somewhere.
    12,300 Gallon, IG PebbleFina, 3 ft sheer, 2 Jandy nicheless LED lights, Jandy Pro 1.5HP VS pump (A.O. Smith Motor), PB4-60 Booster pump, Polaris 280, Jandy cv340 cartridge filter, Zodiac Z4 control panel W/iAquaLink, Stenner pumps for chlorine & MA connected to WiOn WiFi switches, TF-100. You can support TFP with AmazonSmile just click the link!

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    Sidecarist's Avatar
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    Re: CH disappearing

    The solar was off while I was away and the pool level was down only 1/2in. I'm more inclined to think overflow from a week straight of thunderstorms. But again the cya didn't go down at all.

    I'm not going to worry about it. I'll just keep an eye on things. Sometimes I have to accept that it's good enough and just go swimming.

    Thanks!
    12,000gal Fiberglass In Ground, Pentair 1hp single speed pump, and Pentair 100sq/ft single cartridge filter. Intellichlor IC-40 SWG, Roof mounted 400ft solar heat loop, Zodiac MX8 Elite cleaner w/leaf canister
    Taylor K-2006-C, Speed Stir, Taylor K-1766 salt test

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    bobodaclown's Avatar
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    Re: CH disappearing

    Quote Originally Posted by Sidecarist View Post

    I'm not going to worry about it. I'll just keep an eye on things. Sometimes I have to accept that it's good enough and just go swimming.
    Good idea! Also 200-230 isn't all that much of a big deal. I think it's within testing accuracy...
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

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