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Thread: Scaling every where but calcium really low

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    Scaling every where but calcium really low

    White lines and Scaling on the water level but the test tells me that calcium level is low! Wow. I thought it was gonna be so high.

    Can low calcium cause Scaling?

    Anyone know a chemical removal/dissolving of whitelines on tiles?
    1500 gallons SPA. 104
    IG, Plaster, 6years old.
    Sand filter Triton ll TR140.
    Taylor K-2006 Complete Pool
    Pentair brominator feeder using bromine. Bi-carbonate. Calcium chloride.

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    Texas Splash's Avatar
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    Re: Scaling every where but calcium really low

    Low calcium, along with low pH and TA can cause etching & dissolving of the plaster. So be very careful about that. In your case, a set of test results might help us give you some more ideas to go on.

    Scale on tiles can often be removed with some muriatic acid and a brush or perhaps a pumice stone. Test on a small area first.
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    Richard320's Avatar
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    Re: Scaling every where but calcium really low

    It could well be that the Calcium was sky-high and is now attached to the walls. Dissolving it will bring it back into the water and CH levels will rise again.

    To get the white crust off at the water line, some 1:4 acid water in a spray bottle should make it fizz up and dissolve. Then you just slosh some pool water on it to rinse it clean. Tough spots get attacked with a pumice stone. Sounds awful but doesn't seem to affect the tiles at all. There will be heaps of pumice dust settling on the floor, though. It's pretty soft.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Re: Scaling every where but calcium really low

    Texas splash.
    You are right.
    everything was low.
    I will balance the calcium then acid the water level.
    1500 gallons SPA. 104
    IG, Plaster, 6years old.
    Sand filter Triton ll TR140.
    Taylor K-2006 Complete Pool
    Pentair brominator feeder using bromine. Bi-carbonate. Calcium chloride.

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    Mod Squad pooldv's Avatar
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    Re: Scaling every where but calcium really low

    More on scale here, Pool School - Calcium Scaling
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