Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 5 of 5

Thread: CH on 20ppm?

  1. Back To Top    #1
    todd.scallions's Avatar
    Join Date
    Apr 2010
    Location
    Bartlett, TN
    Posts
    56

    CH on 20ppm?

    I see that it says CH doesn't really matter for vinyl liners but there is still a recommend range of 200 & 400ppm. I've tested pool water twice and tested the fill water and my CH readings are coming out at 20ppm. Is there any danger for having such a low CH reading? Is there any benefit to bringing it into the recommended range?
    1.) 27,000 gallons
    2.) Sand Filter
    3.) In-ground
    4.) Vinyl Liner
    5.) 1HP/63GPM

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: CH on 20ppm?

    Where do you see a range of 200-400 for CH for vinyl pools?

    Even 0 is fine in a vinyl pool ... so I would not worry about it.
    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
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  3. Back To Top    #3
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: CH on 20ppm?

    Low CH can contribute to foaming. Other than that... who cares? If I were you, I'd crunch some numbers and see what the cost per FCppm is between bleach and Cal-hypo, and if it was cheaper, use some Cal-hypo. I got a flier in the mail, all those pucks and powders are on sale right now!
    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!

  4. Back To Top    #4
    todd.scallions's Avatar
    Join Date
    Apr 2010
    Location
    Bartlett, TN
    Posts
    56

    Re: CH on 20ppm?

    I've already read that it didn't matter for vinyl liners I was just wondering if it was normal for such extremely low CH readings. I just assumed that my water would be somewhere in that general range.
    1.) 27,000 gallons
    2.) Sand Filter
    3.) In-ground
    4.) Vinyl Liner
    5.) 1HP/63GPM

  5. Back To Top    #5
    todd.scallions's Avatar
    Join Date
    Apr 2010
    Location
    Bartlett, TN
    Posts
    56

    Re: CH on 20ppm?

    Maybe I should have worded it differently. I wasn't asking "hey will 20ppm damage my liner" i was asking is there any negative impact to having such a low reading water quality wise and is there any benefit to having a higher reading. So it only effects foaming and that's it. Thanks for the help.
    1.) 27,000 gallons
    2.) Sand Filter
    3.) In-ground
    4.) Vinyl Liner
    5.) 1HP/63GPM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •