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Thread: What CH Level Should I Target?

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    What CH Level Should I Target?

    I ran a test using the TF100 kit and found that my CH level is in the range of 30 - 40 PPM. The Water Balance for SWGs article in Pool School recommends a CH level of 50 - 300 PPM for vinyl pools. The Owners manual for my Jandy AquaPure SWG recommends a CH level of 175 - 400 PPM. Should I target 200 PPM? How important is the CH level in a vinly pool?
    Free-form concrete walls with vinyl liner, 18,000 gallon capacity, Jandy 1.5HP e-Pump, Jandy DEV48 DE filter (using cellulose media), Jandy AE2500 heat pump, Jandy Aqualink Power Center with 14-blade cell kit and Jandy PDA-P8 wireless control system.

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    Mod Squad Bama Rambler's Avatar
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    Re: What CH Level Should I Target?

    I have zero CH in my pool and seems to be happy. The liner is still pliable and hasn't lost it's color. The GK's don't complain and that's good enough for me. There have been reports in the past about some equipment (heater) warranty statements requiring a certain level to maintain warranty but other than for that it's not an issue at all.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    JasonLion's Avatar
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    Re: What CH Level Should I Target?

    +1 for what Bama said
    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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    Re: What CH Level Should I Target?

    Thanks for the replies. It sounds like I should just leave the CH where it is (30-40 PPM). Will this create any corrosion problems?
    Free-form concrete walls with vinyl liner, 18,000 gallon capacity, Jandy 1.5HP e-Pump, Jandy DEV48 DE filter (using cellulose media), Jandy AE2500 heat pump, Jandy Aqualink Power Center with 14-blade cell kit and Jandy PDA-P8 wireless control system.

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    JasonLion's Avatar
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    Re: What CH Level Should I Target?

    No. Low calcium does not cause corrosion of anything other than plaster/pebble/tile surfaces (and to a lesser extent fiberglass). Nothing else is affected by low CH levels.
    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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    Re: What CH Level Should I Target?

    Jason,

    Thanks for the response. You just saved me $30 - $40 in CH increaser from the pool store! I went to several hardware and big box stores looking for 100% calcium chloride deicer and found that it's almost impossible to get during this time of the year. Next winter I will buy a bag should I need to increase the CH level.
    Free-form concrete walls with vinyl liner, 18,000 gallon capacity, Jandy 1.5HP e-Pump, Jandy DEV48 DE filter (using cellulose media), Jandy AE2500 heat pump, Jandy Aqualink Power Center with 14-blade cell kit and Jandy PDA-P8 wireless control system.

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    Mod Squad YippeeSkippy's Avatar
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    Re: What CH Level Should I Target?

    Quote Originally Posted by JasonLion
    No. Low calcium does not cause corrosion of anything other than plaster/pebble/tile surfaces (and to a lesser extent fiberglass). Nothing else is affected by low CH levels.
    Well that relieves me to read! I have a fiberglass pool and while my CH is a bit low I hadn't bothered to raise it yet. Now I think I shan't even worry....
    My Amazon Smile for November12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
    Our pool build--> Our Pool Solved Our Sloping Yard Skippy's Cheap Pool Cooler -->Skippy's New Fountain

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    Mod Squad Bama Rambler's Avatar
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    Re: What CH Level Should I Target?

    Low or no CH only applies to vinyl liner pools. Fiberglass pools are a completely different animal. You need CH of about 250 in a fiberglass pool.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Mod Squad YippeeSkippy's Avatar
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    Re: What CH Level Should I Target?

    Quote Originally Posted by Bama Rambler
    Low or no CH only applies to vinyl liner pools. Fiberglass pools are a completely different animal. You need CH of about 250 in a fiberglass pool.
    Well good thing I was mixed up- its my hot tub that is low on CH, my fiberglass pool is fine! I shouldn't rely on memory when posting numbers. I actually do have them all recorded on separate testing logs (one for the hot tub, one for the pool).
    My Amazon Smile for November12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
    Our pool build--> Our Pool Solved Our Sloping Yard Skippy's Cheap Pool Cooler -->Skippy's New Fountain

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