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Thread: Balancing Pool after Acid Startup

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    IrwinK's Avatar
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    Balancing Pool after Acid Startup

    PB did what I think was an Acid Startup after letting pool sit for 4 days after fill water.
    I don't want to repeat all the awful details of the 2 hr startup as they on my build thread but here are a few:

    After the startup my PH went from 7.5 to something way below 6.8 as PH test was below lowest mark and bright yellow. PB put in 2 gallons of 31% Muriatic Acid, 2 gallons of Chlorine and a 1 gallon pail of granules he said was Stabilizer but I had zero CYA. Per Pool Math PH could have got down to 3.5

    PB told me to brush daily and left for a 2 week vacation. I asked if I should bring the PH up to 7.5 after a few days. He said it will rise to that after about a week.

    After a week I still was reading below 6.8 PH and TA zero. CH 150.

    So decided researched old threads and got some A&H Washing Soda. Per Pool Math (Effects of Adding Chemicals) last evening I added 2 boxes (110 oz.) which should have brought PH up to about 7.5 if it was just under 6.

    Water turned cloudy last night but this morning it is clear.

    PH 8.2
    TA 40
    FC 5
    CYA 20
    CH 150

    My question is do I add acid to bring PH down to 7.5?
    New Plaster will be increasing PH but I'm temporarily using Trichlor tablets and they are Acidic.
    My 2016 Build 14'x19'x35' IG Gunite 15K Gal. Roman, 4'-5' deep, 6 returns, 3 sheers
    4 deck jets, 2 Pentair XF22005 Pumps, Clean&Clear 200 Cartridge Filter, Brick Coping
    2 Pentair 5g 12v LED Pool Lights, 1 Pentair 12v Globrite LED in step area, 2 Bubblers
    Inline Chlorinator - SWG later, WetEdge Mediterranean Pebble, Intermatic MultiWave
    43'x33' Screened Paver Deck&15'x30' Lanai, Doheny Discovery (S200) Robot, TF-100

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    Mod Squad pooldv's Avatar
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    Re: Balancing Pool after Acid Startup

    Yes, it is important to keep PH between 7.2 and 7.8 at all times.

    Important information here for your plaster, Wet Edge | Warranty
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    IrwinK's Avatar
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    Re: Balancing Pool after Acid Startup

    I added 12oz. of acid this afternoon and here are my latest test results this evening.
    All are from the TF-100 Testkit except CYA is an estimate based on approx 10 pucks dissolved at 2.2 ppm CYA per puck.
    I will do the CYA test tomorrow in the sunlight.

    FC 6.5
    CC .5
    TC 7
    PH 7.5
    TA 60
    CH 200
    CYA 22

    CSI -.27
    My 2016 Build 14'x19'x35' IG Gunite 15K Gal. Roman, 4'-5' deep, 6 returns, 3 sheers
    4 deck jets, 2 Pentair XF22005 Pumps, Clean&Clear 200 Cartridge Filter, Brick Coping
    2 Pentair 5g 12v LED Pool Lights, 1 Pentair 12v Globrite LED in step area, 2 Bubblers
    Inline Chlorinator - SWG later, WetEdge Mediterranean Pebble, Intermatic MultiWave
    43'x33' Screened Paver Deck&15'x30' Lanai, Doheny Discovery (S200) Robot, TF-100

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    Mod Squad pooldv's Avatar
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    Re: Balancing Pool after Acid Startup

    Looks good except you need to raise CH to 250 or whatever Wet Edge recommends, whichever is higher.
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    IrwinK's Avatar
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    Re: Balancing Pool after Acid Startup

    WetEdge Startup or Warranty does not say anything about what CH after 28 days.


    "calcium levels should be adjusted slowly over the 28 day period not to

    exceed 200 ppm"

    I'm at 200 now so not going to add any Calcium.


    My 2016 Build 14'x19'x35' IG Gunite 15K Gal. Roman, 4'-5' deep, 6 returns, 3 sheers
    4 deck jets, 2 Pentair XF22005 Pumps, Clean&Clear 200 Cartridge Filter, Brick Coping
    2 Pentair 5g 12v LED Pool Lights, 1 Pentair 12v Globrite LED in step area, 2 Bubblers
    Inline Chlorinator - SWG later, WetEdge Mediterranean Pebble, Intermatic MultiWave
    43'x33' Screened Paver Deck&15'x30' Lanai, Doheny Discovery (S200) Robot, TF-100

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    Mod Squad pooldv's Avatar
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    Re: Balancing Pool after Acid Startup

    Ok, sounds good. Then raise it to 250 after 30 days.
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    IrwinK's Avatar
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    Re: Balancing Pool after Acid Startup

    PB back from vacation and made a surprise visit late yesterday afternoon. Pool is running 14 days now from start-up.

    I told him about Zero CYA after he added a gallon of granules. He said it definitely was Cyanauric Acid that he added not Calcium or Sequestrant. So still a mystery where it went, but I'm thinking about it again and PB had cleaned the filter within a few minutes of adding the chemicals. Lots of what I thought was dirt and sand washed out so it could have been all the CYA since it was not pre-dissolved before he added it..

    I have the CYA up to 30 now by temporarily using Trichlor pucks. Goal is 50 to 60 then will stop using them.

    PH 7.5
    FC 6.5
    CC .5
    TA 60
    CH 200
    CYA 30
    Last edited by IrwinK; 07-26-2016 at 11:40 AM. Reason: Added PH reading
    My 2016 Build 14'x19'x35' IG Gunite 15K Gal. Roman, 4'-5' deep, 6 returns, 3 sheers
    4 deck jets, 2 Pentair XF22005 Pumps, Clean&Clear 200 Cartridge Filter, Brick Coping
    2 Pentair 5g 12v LED Pool Lights, 1 Pentair 12v Globrite LED in step area, 2 Bubblers
    Inline Chlorinator - SWG later, WetEdge Mediterranean Pebble, Intermatic MultiWave
    43'x33' Screened Paver Deck&15'x30' Lanai, Doheny Discovery (S200) Robot, TF-100

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    Mod Squad pooldv's Avatar
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    Re: Balancing Pool after Acid Startup

    Numbers look good! That is a good theory on the CYA. Nice work.
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    IrwinK's Avatar
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    Re: Balancing Pool after Acid Startup

    Thanks.

    Forgot to list the current PH reading. It's 7.5
    Was edging up to 7.8 so added some Muriatic Acid per Pool Math and it's back to 7.5
    My 2016 Build 14'x19'x35' IG Gunite 15K Gal. Roman, 4'-5' deep, 6 returns, 3 sheers
    4 deck jets, 2 Pentair XF22005 Pumps, Clean&Clear 200 Cartridge Filter, Brick Coping
    2 Pentair 5g 12v LED Pool Lights, 1 Pentair 12v Globrite LED in step area, 2 Bubblers
    Inline Chlorinator - SWG later, WetEdge Mediterranean Pebble, Intermatic MultiWave
    43'x33' Screened Paver Deck&15'x30' Lanai, Doheny Discovery (S200) Robot, TF-100

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