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Thread: updated pool test results, comments on my actions please.

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    updated pool test results, comments on my actions please.

    cl - 1
    ph - 7.5
    cya - 20
    t/a - 110
    fc - 1.5
    cc - 0
    ch - 220
    ph is low because i just added muriatic acid yesterday. Ph spikes constantly. Am i right to assume that i could just add dichlor or triclor and that will raise my cya as necessary and also lower the ph as it spikes.

    Water is crystal clear and looks great, just trying to keep it that way.
    21 X 42 freeform gunite pool w/ spa
    white plaster finish
    Jandy VS ProFlow Pump
    3 returns, 2 skimmers
    pentair DE filter
    Aquapure 1400 SWG
    Raypac 399,000 BTU Heater
    Zodiac Nature 2 Pool sanitizer (haven't used yet)

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    If you get your TA down to 70-80 ppm and get your CYA up to around 70 ppm AND keep you pH at 7.6 and when it hits 7.8 add enough acid to brng it back to 7.6 and not lower then you will find that your pH will become more stable. (Unless, of course, this is new plaster that is less than a year old in which case your pool will consume a lot of acid as the plaster cures. Adjusting your water as I suggested above will help in any case.)
    You might want to read the sticky on water balance for SWGs. It will be useful for you. The link to the stickies is in my signature.

    If you have new plaster then using trichor tablets in a floater will help control the pH rise but it will add CYA slowly and the low CYA level with a SWG is one of the things contributing to the pH spikes. The sticky explains the reasons.

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    Re: updated pool test results, comments on my actions please.

    Quote Originally Posted by GZelano
    cl - 1
    ph - 7.5
    cya - 20
    t/a - 110
    fc - 1.5
    cc - 0
    ch - 220
    ph is low because i just added muriatic acid yesterday. Ph spikes constantly. Am i right to assume that i could just add dichlor or triclor and that will raise my cya as necessary and also lower the ph as it spikes.

    Water is crystal clear and looks great, just trying to keep it that way.
    Your pH is just right @ 7.5....don't change it.

    Tell us more about the constant pH spikes...how often?...how much?

    Tri chlor and di chlor will raise your CYA but I'd rather see you but in CYA seperately and bring your CYA up to about 40ppm.

    Then raise you chlorine to around 4ppm and keep it there.

    How are you currently chlorinating?
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    tagprod's Avatar
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    I don't think the trichlor pucks are going to do anything for your PH spikes - but bringing your TA down should. I would get the ph down to 7.2. Do you have any waterfalls or spillover spa? That will make PH rise. If you keep jumping on the PH and keeping it at 7.2 the TA will come down and you should see the PH stabilize.
    Brian
    20K IG Gunite w/ raised 7ft spillover spa. 1.5 HP Hayward Northstar pump 425 sq ft Hayward cartridge filter, Colorlogic lights AquaRite SWG AquaLogic PS-8 control
    1hp pump for sheer descent

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    Butterfly's Avatar
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    Welcome to the forum.

    The sticky for "Water Balance Tips for a SWG" by Waterbear is here:

    http://www.troublefreepool.com/sticky.php?s=3663

    Keep us posted!
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
    You're done SLAMing when:
    1)You lose 1ppm or less FC overnight, & 2)You have .5ppm CC's or less, & 3)your water is clear.

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    Sorry i left out some inf, When the cleaner comes on every day the added pressure on the spa jets makes the spa swirl and also bubble. this happens 5-6 hours every day. Maybe i should lower the amount of time the cleaner runs to limit the amount of aeration ?

    Currently chlorinating with a swg Aquarite
    Attached Images Attached Images
    21 X 42 freeform gunite pool w/ spa
    white plaster finish
    Jandy VS ProFlow Pump
    3 returns, 2 skimmers
    pentair DE filter
    Aquapure 1400 SWG
    Raypac 399,000 BTU Heater
    Zodiac Nature 2 Pool sanitizer (haven't used yet)

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    If you'll raise your CYA to the 60-70ppm level, you'll be able to turn down your SWG and get more life from the cell. I'd put the CYA in their manually and then adjust the SWG to keep the FC around 2-4ppm...maybe a tad higher.

    Your pH will continue to rise because of the SWG....it's the nature of the beast.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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