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Thread: Calcium Hardness vinyl - first time testing

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    astronaut888's Avatar
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    Calcium Hardness vinyl - first time testing

    TF100 user here for the past 2 years

    Had a recent bout w heavy thunderstorms that really bottomed out my TA - and after raising and retesting , got a wild hair and decided to check my CH for the FIRST time ever
    I have a 20k gallon vinyl with a new liner about 2 yrs old - been steady TFPC since new liner install and have been trouble free since (!)

    My CH measures 30
    Which - I understand - is very low

    Is this something that I should even give a second thought to??

    FC 7
    CYA 40
    pH 7.5
    CC ZERO
    TA adjusted to 80 from 40
    CH 30
    20K gal, IG vinyl, 1 1/2 HP Hayward Super Pump , 100lb sand, installed 2000 - new liner/filter/pump March 2014
    TF-100 test kit

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    Isaac-1's Avatar
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    Re: Calcium Hardness vinyl - first time testing

    CH is not needed for vinyl pools unless you need it for some warranty reason where some minimum level is specified without regard to type of pool (this happens with some heaters even though low CH is not bad for the heaters)
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from http://tftestkits.net
    ~Remember TFP counts on your donations to keep this site ad free~

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    rhaas12321's Avatar
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    Re: Calcium Hardness vinyl - first time testing

    What if you have concrete decking surrounding the pool? Does low CH splash out deteriorate the decking?
    10k Gallon, IG Kafko Vinyl Liner (8/1/12), 200# Sand w/ 1 hp Hayward MaxFlo pump, Taylor K2006
    3 4x12 Heliocol East facing + 3 4x12 Heliocol West facing 2015
    Robert from Sunny Southern Oregon

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    Richard320's Avatar
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    Re: Calcium Hardness vinyl - first time testing

    Quote Originally Posted by rhaas12321 View Post
    What if you have concrete decking surrounding the pool? Does low CH splash out deteriorate the decking?
    No worse than rain. Rain has no calcium.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    astronaut888's Avatar
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    Re: Calcium Hardness vinyl - first time testing

    So - consensus is no worries ?

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