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Thread: Sodium Chloride vs Calcium Chloride to raise hardness

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    Sodium Chloride vs Calcium Chloride to raise hardness

    Hi, I inadvertently added sodium chloride ( salt) to my pool ( 80lbs worth) thinking that it was calcium chloride. I noticed that it did not raise the hardness of the water and realized that I put in the wrong product.
    Question: I plan on adding the correct product ( Calcium Chloride) tomorrow to raise the hardness. Will there be an issue with the salt already in the pool? The pool is 45,000 gallon gunite. Just opening for season . I use chlorine also. Thanks, and I'm glad that I found this forum. Cheers, Tom.

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    Mod Squad jblizzle's Avatar
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    Re: Sodium Chloride vs Calcium Chloride to raise hardness

    Welcome to TFP!!!

    What kind of salt did you add? For a water softener? As long as there were not additives in it, all it will do is raise your salt level by a little over 200ppm ... pools that use salt water chlorine generators have salt levels around 3500ppm. So, no worries.
    Jason, TFP Moderator
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    frustratedpoolmom's Avatar
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    Re: Sodium Chloride vs Calcium Chloride to raise hardness

    None - some people add salt to improve the feel of the water

    You can use the Pool Calculator to see how high your salt level may be now. Use the "Effects of Adding Chemicals" section, though there may already be some salt in the water to start with.

    We're glad you found it too!

    (Jbizzle beat me to it and made a very good point!)

    Cheers!
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    Re: Sodium Chloride vs Calcium Chloride to raise hardness

    Thanks for your quick response. Yes, it said Morton pool salt on the label and stated that it had no additives and was pure. It also said something about use in water softeners too. Glad to hear that there won't be an issue. Won't make this mistake again. Looking back, the price for these bags were about one fifth of that of calcium chloride...now I know why.

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    Mod Squad jblizzle's Avatar
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    Re: Sodium Chloride vs Calcium Chloride to raise hardness

    We actually also recommend using just solar salt as it is half the price of the pool salt ... same stuff, just not ground up as much.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    Re: Sodium Chloride vs Calcium Chloride to raise hardness

    Thanks for the advice , much appreciated. The big test now is going to see if my Hayward Super II 2hp pump fires up after ten New Hampshire winters. Ran well when we shut her down in late September. Who knows, I may be asking advice on what brand pumps you recommend, but I hope not for now. Fingers Crossed.

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    linen's Avatar
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    Re: Sodium Chloride vs Calcium Chloride to raise hardness

    Welcome to tfp, Fretster

    Adding 80 lbs of calcium chloride will move your CH level up 192 ppm, which is a big step and may not be warranted. If you want, post your TA, ph, CH, cya, salt and borate levels...if you do not know what I am asking for post back.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Re: Sodium Chloride vs Calcium Chloride to raise hardness

    Typically I add about thirty to thirty five pounds of Calcium Chloride on start up day. This usually brings me into the acceptable range for hardness.

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    linen's Avatar
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    Re: Sodium Chloride vs Calcium Chloride to raise hardness

    What is your CH now?
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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