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Thread: Bicarb Start-up

  1. Back To Top    #1

    Join Date
    Mar 2012
    Location
    Mountain Brook, AL
    Posts
    112

    Bicarb Start-up

    This is a topic I'm very interested in as I'm on day 4 of new plaster. I have read here several times not to worry about CH and TA as they will rise on their own, then adjust them after a few weeks. I'm wondering if raising the CH to 200 is a good idea as onBalance suggests. I didn't acid wash and it seems that the hard troweling was done well. I do think most of the same plaster dust gets swept around over and over. It seems to settle right away. I've backwashed twice.

    Day 4
    FC 1.0
    Ph 7.2
    TA 60
    CH 170
    13,500 gallon IG Diamond Brite Super Blue, Pentair Superflo 1.5 HP 2 speed pump, 300 lb Hayward Sand Filter, Hayward Swim Pure+ SWG, Four 4X20 Fafco Solar Bears, Jandy Lite2 NG Heater, Borates, Blue Diamond Robot, TF100 & Refills, Taylor SpeedStir

  2. Back To Top    #2

    Join Date
    Mar 2012
    Location
    Mountain Brook, AL
    Posts
    112

    Re: The Bicarb Start-up and Why it Works

    I just read what-am-i-missing-everything-seems-good-except-csi-t40373.html

    Honestly, this topic seems to be too much for the typical homeowner to handle.
    13,500 gallon IG Diamond Brite Super Blue, Pentair Superflo 1.5 HP 2 speed pump, 300 lb Hayward Sand Filter, Hayward Swim Pure+ SWG, Four 4X20 Fafco Solar Bears, Jandy Lite2 NG Heater, Borates, Blue Diamond Robot, TF100 & Refills, Taylor SpeedStir

  3. Back To Top    #3

    Join Date
    Mar 2007
    Location
    San Rafael, CA USA
    Posts
    12,082

    Re: The Bicarb Start-up and Why it Works

    At a minimum, I'd get your pH and TA up as well as your CH to some degree. If you went to 7.8 in pH, 80 ppm in TA, and 200 ppm in CH, then at least your saturation index will be slightly positive. For your 13,500 gallon pool that would be 20 ounces volume of soda ash (sodium carbonate aka pH Up) and 20 ounces volume of baking soda (sodium bicarbonate aka Alkalinity Up) and 6 cups of calcium chloride anhydrous (11-1/2 cups of calcium chloride dihydrate).

    If at that point you only find the pH to rise but the CH remains stable, then you'll know that you are protecting your plaster. In that case, the CH could be raised even more since eventually you'll probably have it at 300 ppm if you intend to keep your pH around 7.5.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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