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Thread: Pebble Finish - Trouble Maintaining pH / TA

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    Pebble Finish - Trouble Maintaining pH / TA

    Morning! Our pebble remodel was completed at the end of June. Since then, I've been testing the water daily for pH and FC and a full panel weekly. Prior to the pebble remodel, I would utilize maybe a bottle of acid once a year. Since the remodel, I've gone through about 20 lbs of Baking Soda and 3 bottles of acid. There was a discussion in The Deep End but it seemed to be a very short discussion.

    - Would I expect this high level of acid use to continue during the ownership of the pebble pool? Or is this temporary since we're perhaps still in a curing phase?
    - Would it be advisable to hold TA at a lower level (below 70-90) for some time until pH stabilizes?

    Full disclosure, at the start of the curing process I made the mistake of holding TA higher than 90 thinking a higher TA stabilized pH, but TA does not act like CYA .
    Jorge - Tampa Bay

    • Pool Configuration
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    tcat's Avatar
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    Re: Pebble Finish - Trouble Maintaining pH / TA

    I hold my TA at 70-75 (without anything added, holds its own). But I do need to add at least 8 oz. Acid every other day to hold ph down, and that's only down to 7.7. My pool is cured 5 years. Just added borates to 50 to see if that keeps pH more stable. No salt.
    IG pebble, 15,000 gallon
    48 PentAir DE Filter with backwash valve
    PentAir Whisperflo pump with 1hp 2-speed motor
    Aquabot 4WD, Poolskim
    Intermatic Dual Timeclock with freezeguard
    DIY chlorine feed
    BBB

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    Re: Pebble Finish - Trouble Maintaining pH / TA

    Thanks for the heads up! We'll just need to stay on top of it. Thanks!

    Jorge - Tampa Bay

    • Pool Configuration
      11,000 gallon Stonescapes Mini Carribean Blue
      MX8 Barracuda
      Hayward C1200 Cartridge Filter with a DISABLED 3" In-line Chlorinator
      3/4 hp Jacuzzi Pump
      TFT 100 Testing Kit w/ Speedstir
      Wall Whale Brush / Aqua Comb Filter Cleaner

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    Mod Squad jblizzle's Avatar
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    Re: Pebble Finish - Trouble Maintaining pH / TA

    The rise should slow after a year or so. But, by having your TA higher, that was certainly making the pH rise more quickly.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Pebble Finish - Trouble Maintaining pH / TA

    My pool is a quartz finish but its only two months old. I was dumping acid in my pool every other day until just a few weeks ago. My TA is at 90 now and now my pH is holding strong at 7.6 for about a week. I think that your pool will stabilize as the pebble finish cures longer.
    17,000 inground gunite pool finished June 2013. Pentair variable speed something or another. Polaris cleaner, inline rainbow chlorinator. Using trichlor until CYA reaches 50-60.

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