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Thread: Calcium dropped slightly

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    JohnA902's Avatar
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    Apr 2016
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    Calcium dropped slightly

    PH 7.5
    FC 4-5
    TA 90
    CYA 30
    CH 225

    CH was always 250 but rain and draining a bit must have bumped it down.

    My question is how can I add calcium carbonate without spending a fortune? I know Leslies sells "calcium hardness plus" but can I find the same thing at Walmart or a box hardware store? If so, is identical in terms of fineness/granularity?

    Thanks.


    27,000 gal concrete rectangle, built Oct '15, DE filter, Jandy PHPM 1.5 HP, Hayward HP21104T heat pump, TF-100

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    Cantonment, FL (Pensacola Area)
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    Re: Calcium dropped slightly

    Calcium chloride is sold as deicer at Home Depot and big box stores up North there. Brands are DowFlake and Tetra.
    Scott
    15,000 Gallons vinyl in-ground screen enclosed, Hayward Eco-star SP3400VSP, Hayward Aqua Logic PL-Plus, Hayward T-15 Salt Cell, Hayward S244T Sand Filter, Polaris 380 with booster pump, Hayward heat pump HP50HA. K-2006 kit.

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    kcindc's Avatar
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    Re: Calcium dropped slightly

    Other terms are hardness increaser.

    I order mine via Amazon and I get 25 lbs at a time as it is more economical. Seems like you need about 25 lbs to get your CH in the recommended range. See pool math to determine how much you need. It will last until you need it again.

    Here are two that are on Prime: Amazon.com : Pool Mate 1-2825 Calcium Increaser for Swimming Pools, 25-Pound : Patio, Lawn Garden
    and
    Amazon.com : Robelle 2825 Calcium Plus for Swimming Pools, 25-Pound (Discontinued by Manufacturer) : Swimming Pool Ph Balancers : Patio, Lawn Garden
    Karen
    33K IG w spa plaster, Pentair 1HP Whisperflo, DE Filter, SWG CircuPool RJ-60, Dolphin Triton Plus, Raypak Dig 336K BTU, TF-100.
    Pool Math Chlorine / CYA Chart SLAM - Shock Level And Maintain
    2017 replaster/retile

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    Mod Squad pooldv's Avatar
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    Re: Calcium dropped slightly

    More here on pool chems, Pool School - Recommended Pool Chemicals
    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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    JohnA902's Avatar
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    Re: Calcium dropped slightly

    Great!

    I searched Lowes and couldn't find anything. Found a 25lb tub on Amazon with prime for $33. Can't beat that. Similar to the pool mate above.


    27,000 gal concrete rectangle, built Oct '15, DE filter, Jandy PHPM 1.5 HP, Hayward HP21104T heat pump, TF-100

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