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

Thread: Question after Acid Washing

  1. Back To Top    #1

    Join Date
    Dec 2015
    Location
    Houston
    Posts
    3

    Question after Acid Washing

    I did read the old posts/ threads but did not get exactly what I wanted. I have a 1.5 year old pool with splotchy wet edge pebble surface. Pool company performed a drain and acid wash under warranty and now that looks better. Refilled on Thursday with city water, ran filter pump and cleaner added 2 gallons of chlorine and 6 pounds of CYA. Tested yesterday (results below) and added 2 pounds of CYA, 1 gallon of bleach, 6 pound of sodium carbonate, and 160 pounds of salt (SMG off). Hard unexpected rain last night. Now I don't know where to head, keep using bleach as my FC went to 0 (rechecked) or attempt to put my 500 # of salt and start SWG, or maybe even chlorine tabs (really don't want to do this)?
    20000 gallon pool

    last night
    TA 130
    pH 7.0
    FC 2
    CH 220
    CC- not checked
    CYA-30
    Salt-0

    today
    TA 170
    pH >8
    FC 0
    CH 200
    CC- could not assess with taylor kit
    CYA- 50
    Salt- 200

    Thoughts to add bleach today, muratic acid today, CYA today. Agree / disagree / suggestions?
    ​20,000 Gal, IG, Wet Edge Pebble
    Hayward Swim Clear Cartridge
    Hayward TriStar Pump x4 (Main, Water Features, In Floor Cleaning)
    SWG
    Goldline Prologic

  2. Back To Top    #2
    needsajet's Avatar
    Join Date
    Jan 2016
    Location
    Sydney, NSW, Australia
    Posts
    4,493

    Re: Question after Acid Washing

    Welcome to TFP! Good to have you here

    I recommend Pool School (button above), so you can benefit from a thorough understanding of Trouble Free Pool Care (TFPC). I gained a lot from the thread linked in my signature as well: TFPC for Beginners. The ABCs of Water Chemistry is also highly recommended reading.

    I would raise the FC to 6 to 8 ppm right away, which is the your target per the FC/CYA chart, also linked in my signature. That's the top priority.

    Whenever you see pH above 7.8 (greater than 7.8); drop it down to 7.4 with muriatic acid which will gradually get rid of the excess TA. We can revisit CH after TA comes down. Here are the recommended chemical levels: Pool School - Recommended Levels and until the SWG is turned on, use 'Plaster' 'with Bleach'. No more CYA is needed until the SWG is in use, and also it's a good idea to wait a couple days after an addition of CYA, before testing it. 24 hours for salt is usually enough, but CYA can take a bit longer.
    12k IG salt; glass beads in plaster; K-2006C, K-1766, K-1106 and CCL test kits; Pentair Eco800 1.2HP VS; Zodiac SWCG 1.3 lb/day (25 g/hr); 25" filter recycled glass; OKU solar panels; 1/2 HP solar pump; Rebel (Warrior) pool cleaner; FlowViz; Other family pools 10K SWCG and 15K on liquid; PoolMath app subscriber; | Read Before Posting to get the best possible advice | ... and this helped me a lot!: TFPC for Beginners

  3. Back To Top    #3

    Join Date
    Dec 2015
    Location
    Houston
    Posts
    3

    Re: Question after Acid Washing

    Thank you
    ​20,000 Gal, IG, Wet Edge Pebble
    Hayward Swim Clear Cartridge
    Hayward TriStar Pump x4 (Main, Water Features, In Floor Cleaning)
    SWG
    Goldline Prologic

Posting Permissions

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