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Thread: what problems come from low calcium hardness? any?

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    20GT's Avatar
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    what problems come from low calcium hardness? any?

    I asked this here because i did not find a post about it.

    I've been told by TFP not to worry about low calcium hardness
    On the WWW it says otherwise can some set me straight on this?


    This is what i found:

    Swimming pool problems caused by low calcium hardness
    Corrosive water
    Etching of your pool plaster
    Pitting of your pool concrete
    Dissolve grout in your pool
    Pitting of your pool deck surfaces
    Staining of your pool surfaces
    Heater failure

    Thanks
    5,593 gallons of water at 80% capacity <Orlando, Florida>
    AG Intex Round Metal pole Swimming Pool - 16 Feet x 48 Inches (Intex A 16 X 48 F B02 11 01)
    Sand, SandPro 75 – 3/4 HP, 45GPM/2700GPH flow rate. GAM-4511 (Just days old 7/5/11)
    Crystal Clear Still

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    Mod Squad JohnT's Avatar
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    Re: what problems come with low calcium hardness? any?

    You don't have plaster, concrete, grout, a deck or a heater to worry about. I can't imagine how low calcium can stain a liner. Mine is 6 years old with no stains, and my CH is 0.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    20GT's Avatar
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    Re: what problems come from low calcium hardness? any?

    What about my internal pump parts?
    5,593 gallons of water at 80% capacity <Orlando, Florida>
    AG Intex Round Metal pole Swimming Pool - 16 Feet x 48 Inches (Intex A 16 X 48 F B02 11 01)
    Sand, SandPro 75 – 3/4 HP, 45GPM/2700GPH flow rate. GAM-4511 (Just days old 7/5/11)
    Crystal Clear Still

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    Mod Squad JohnT's Avatar
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    Re: what problems come from low calcium hardness? any?

    Quote Originally Posted by 20GT
    What about my internal pump parts?
    It's not going to hurt anything.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    JasonLion's Avatar
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    Re: what problems come from low calcium hardness? any?

    What JohnT said. As long as you have a vinyl liner and don't have any plaster, concrete, grout, etc in contact with the water there is no need to add calcium to the water.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    20GT's Avatar
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    Re: what problems come from low calcium hardness? any?

    thanks
    5,593 gallons of water at 80% capacity <Orlando, Florida>
    AG Intex Round Metal pole Swimming Pool - 16 Feet x 48 Inches (Intex A 16 X 48 F B02 11 01)
    Sand, SandPro 75 – 3/4 HP, 45GPM/2700GPH flow rate. GAM-4511 (Just days old 7/5/11)
    Crystal Clear Still

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    frogabog's Avatar
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    Re: what problems come from low calcium hardness? any?

    Yes. No need to be concerned about calcium. We were equally confused in the first 3 years and added calcium to easy set pools, bought a whole second 5# bucket of the stuff before we found BBB and stopped worrying. It's down to 50 now, fill water is <2 unless it comes from the emergency wells.

    Anyone want to buy a bucket of calcium? lol
    Where kids swim in 54 degree water, turn blue, and giggle happily cuz they got a POOL!
    Year 3 BBB -15' x 48" Intex Metal Frame - Was using (2) 1000gph Intex cartridge filters (see Full time pumping Intex). 2012, converted to 1600gph and sand filter+SWG = Sand filter love affair!
    Don't waste time and energy looking for a better value on test kits, the TF100 is the best deal around. I did the looking and spent the extra money, but you don't have to make the same mistake. Just go here: TFTestkits. I use Pool Calculator for min/max, and shocking chlorine levels.

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    Butterfly's Avatar
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    Re: what problems come from low calcium hardness? any?

    Quote Originally Posted by frogabog
    Anyone want to buy a bucket of calcium? lol
    Well, yeah, I could use it. I'm in the process of raising my CH and - wait frogabog -dang it - I can't afford shipping!
    TFP Moderator TF100 Test Kit TF100 TestKit YouTube Channel PoolMath
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    frogabog's Avatar
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    Re: what problems come from low calcium hardness? any?

    Quote Originally Posted by Butterfly
    Quote Originally Posted by frogabog
    Anyone want to buy a bucket of calcium? lol
    Well, yeah, I could use it. I'm in the process of raising my CH and - wait frogabog -dang it - I can't afford shipping!
    LOL, you're about as far away from me as you could possibly get and still be in the states! Might be good, due to the fact that frogs kinda think butterflies are... ummm... tasty!!
    Where kids swim in 54 degree water, turn blue, and giggle happily cuz they got a POOL!
    Year 3 BBB -15' x 48" Intex Metal Frame - Was using (2) 1000gph Intex cartridge filters (see Full time pumping Intex). 2012, converted to 1600gph and sand filter+SWG = Sand filter love affair!
    Don't waste time and energy looking for a better value on test kits, the TF100 is the best deal around. I did the looking and spent the extra money, but you don't have to make the same mistake. Just go here: TFTestkits. I use Pool Calculator for min/max, and shocking chlorine levels.

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