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Thread: PH keeps rising

  1. Back To Top    #1

    Join Date
    Aug 2017
    Location
    West Palm Beach/Florida
    Posts
    87

    PH keeps rising

    Hi All,

    First I have had it with Leslies Pools. I have been testing my Chlorine and PH myself and supplementing that with Leslies. Never again. I got my TFT-100 and magnetic stirrer (had to order that it just sounded too cool). I have noticed over time that my PH keep rising.

    FC 6.5
    CC .5
    PH 8.2
    TA 100
    CH 550. Leslies said it was 280
    CYA 40. Leslies said it was 65

    This gave me a CSI of .77 which freaked me out. I added about 1/3 gallon of MA and got the PH down to 7.5 which got my CSI down to .08 which is more reasonable.

    On Monday of this week my PH was also 8.2 so I added 1/3 of a gallon of MA and it just climbed up again.

    My plan is to clean my filter this weekend, and then add some more CYA to get that up to 70. I guess at the current levels I should lower the setting on the SWG a little.

    Any other suggestions? Specifically what can I do about my PH?
    18K IG Gunite Pool Florida GEM finish with attached Spa replastered May 2017. Hayward Salt System. Dolphin M500 and SolarBreeze NX. TFT-100. Hayward CX1750RE Cartridge Filter. Hayward H400FDP Propane pool heater.

  2. Back To Top    #2

    Join Date
    May 2017
    Location
    Coventry, CT
    Posts
    335

    Re: PH keeps rising

    Good going on taking over the pool care.

    Just keep hitting it with MA and let the TA fall down to ~70.

    Any idea on how the CH got that high? I didn't think that FL had very hard water typically. Have you been using cal-hypo?
    20' X 40' IG vinyl lined; 31,300 gallons; built ~30years ago
    Hayward 1HP Single Speed Pump w/Sand Filter
    Taylor K-2006,Rola-chem sodium hypo feeder/ 15 gallon tank
    Fill from soft/neutral well water, low flowrate well pump

  3. Back To Top    #3
    Mod Squad Jimrahbe's Avatar
    Join Date
    Jul 2014
    Location
    Bedford, TX
    Posts
    10,152

    Re: PH keeps rising

    Dude,

    Are you continually running your spa spillover? Aeration caused by the spillover is what we use when we want to increase pH..

    Keep adding MA... you are good as long at your TA does not fall below 50.

    Thanks,

    Jim R.
    17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4 (now 8), IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

  4. Back To Top    #4
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    20,322

    Re: PH keeps rising

    Your pH is going to climb. You have triple digit TA, a SWG, and a spa. Any of those three would do it, and you have all three. I suspect part of the problem is that Leslies was always good about telling you to add acid, and then next week add some Alkalinity increaser and so on and so on and so on. Just keep maintaining the pH and TA should come down a little every time and at some point, the pH rise will slow down.
    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!

  5. Back To Top    #5

    Join Date
    Aug 2017
    Location
    West Palm Beach/Florida
    Posts
    87

    Re: PH keeps rising

    I turned off the Spa spillover a few weeks ago to avoid the aeration. No Cal-Hypo. Just the SWG and adding liquid Chlorine whenever we get a big rain and the FC drops. The CH should start coming down this summer as we get our big rains and the pool drains a little from that.

    I will just keep adding MA, now that I can trust my test results and can put them into the pool math app I feel better already. Is twice a week enough for the testing and MA or do I have to try to get that done more frequently?
    18K IG Gunite Pool Florida GEM finish with attached Spa replastered May 2017. Hayward Salt System. Dolphin M500 and SolarBreeze NX. TFT-100. Hayward CX1750RE Cartridge Filter. Hayward H400FDP Propane pool heater.

  6. Back To Top    #6

    Join Date
    Aug 2017
    Location
    Long Beach, CA
    Posts
    39

    Re: PH keeps rising

    Is your pool new? PH rise is greater on new plaster pools for the first year.
    11,500 gal plaster salt water pool & spa, Pentair IC40 SWG, Intelliflow variable speed pump, Pentair Easy Touch controls, Pentair CC520 cartridge filter, 200sf of H2otSun.com solar panels, SoCal location - full sun, Taylor 2006 test kit.

  7. Back To Top    #7

    Join Date
    Aug 2017
    Location
    West Palm Beach/Florida
    Posts
    87

    Re: PH keeps rising

    So yes, the pool was replastered almost exactly a year ago. I also forgot to mention I have a SolarBreeze NX that probably contributes to my aeration.

    I have updated my signature, will go back an increase the precision on that.

    I am just soooo mad a Leslies. I used to go there religiously see the guy use the same tools I now have, and give me completely inaccurate results. It just seems like pool malpractice to me.
    18K IG Gunite Pool Florida GEM finish with attached Spa replastered May 2017. Hayward Salt System. Dolphin M500 and SolarBreeze NX. TFT-100. Hayward CX1750RE Cartridge Filter. Hayward H400FDP Propane pool heater.

  8. Back To Top    #8

    Join Date
    Jun 2014
    Location
    Duncan, South Carolina
    Posts
    29

    Re: PH keeps rising

    My pH is rising repeatedly for the first time this year. The big change is that I added salt (~2500 ppm) back in the Fall in preparation for SWCG, but I haven't actually installed the SWCG yet. Would that cause a rise in pH?
    Duncan, SC - Vinyl roman IG pool with steps & board, 32,000 gals, Hayward sand filter and 2 speed Super Pump (SP2610X152S), RJ45 Plus SWCG, Polaris 280 with 3/4HP Booster Pump, Taylor FAS-DPD Chlorine (K-2006) Test Kit

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