Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: will adding muriatic acid protect my FC like CYA

  1. Back To Top    #1

    will adding muriatic acid protect my FC like CYA

    I have a 20,000gal pool with a SWG that I was planning to clean with muriatic acid(the cell not the pool). My friend was told to just dump the left over acid it into the pool. When I tested after being covered all winter I had 10 ppm FC, PH 7.4, CCs 0, and CYA was 0. The water temperature was 57 Deg so I know the CYA would be a little off but I can't figure out where the Acid went. After opening it up for a few days FC dropped to approx. 2 ppm so I can safely assume that my CYA is truly low. So to my question. If I add the muriatic acid to the pool after removing the scale from the SWG cell will it help protect the FC from the sun or do I need to add the CYA and adjust the ph with Baking soda.

    Thank you in advance.
    16x32 SWG vinyl liner appox. 19k

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

    Re: will adding muriatic acid protect my FC like CYA

    No. Muriatic acid only lowers pH and TA. Cyanuric acid adds CYA.

    Read the "recommended pool chemicals" article in Pool School.
    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

    Re: will adding muriatic acid protect my FC like CYA

    Ok thanks.
    16x32 SWG vinyl liner appox. 19k

Posting Permissions

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