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Thread: Trying to raise raise Ph and chlorine after abscorbic treat.

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    Trying to raise raise Ph and chlorine after abscorbic treat.

    Wheeeehhhhh what a summer. First got diagnosed with mustard algae (think they were wrong). Had super cloudy water then, and replaced sand in filter...that cleaned up the water, but had brown stains on side and bottom of pool. Used your ascorbic trick....YOU GUYS ARE AWESOME WITH ADVISE...just joined last week. now the stains are gone....so i added two bottles of metal out (23000 gal pool) after lowering ph and chlorine. Now I am ready to add chlorine and borax to raise ph and cl levels...the alkalinity is medium to high. Sound like a good plan????? Is there a standard...for bleach addition when I am used to the 1 lb bags of shock.....for example...maybe 1 liter of bleach has same effect of 1 one lb. bag of shock?

    Thanks guys!
    26Kgal IG Vinyl liner
    Hayward 1HP Superpump
    Hayward Pro Grid 4800 DE Filter
    thepoolcleaner pressure side cleaner

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    Make that ADVICE not ADVISE....got excited bout the question hahahaha
    26Kgal IG Vinyl liner
    Hayward 1HP Superpump
    Hayward Pro Grid 4800 DE Filter
    thepoolcleaner pressure side cleaner

  3. Back To Top    #3
    There are links in my signature that can help you, especially Jason's pool calculator (will tell you how much bleach to add) and 'the stickies'.

    Post a full set of numbers for further advice.

    Welcome to TFP!

    8000 gallon 20' x 48" round vinyl frame pool, 12" sand filter (don't have the specs on the pump), TF100 test kit
    Handy Links: PoolMath, TF-100 Test Kit, Pool School, CYA-Chlorine Chart
    "Shock" is a process, not a product!

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    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
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    37,887
    Remember to only bring chlorine and PH levels up very slowly after doing an ascorbic acid treatment.

    It takes about a gallon (3.8 liters) of bleach to equal 1 lb of powdered chlorine. The number isn't at all exact, since both the bleach and the "shock" are available in different strengths.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    mbar's Avatar
    Join Date
    Apr 2007
    Location
    Ashland PA
    Posts
    257
    I wouldn't use powdered bleach - I would use plain ordinary bleach. This way you can control exactly how much you putting in, and raise the chlorine very slowly. You do not want to shock the pool for at least 2 weeks after a stain treatment. You want to use borax to bring your ph up to 7.2, no higher until you can hold chlorine overnight, and you don't see any stains forming. As you bring your chlorine up to the high end of the "best guess chart", watch for new stains. If you see some start, add more sequestering agent (with ph not higher than 7.2). You will find it hard to keep chlorine in your pool until all of the ascorbic acid is gone. It will be hard to get your ph in range too. If your alk is below 80, you can use some baking soda to get it up to 80. If you need to raise both alk and ph, you can use washing soda (soda ash). If your water gets cloudy, just keep the filter running 24/7, and you can use a clarifier SeaKlear is a good one. Let us know if you have any other questions
    16x33 fiberglass pool sand filter

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    Thanks

    Thanks for your help... I now have my test results in with my brand new aqua chem test kit (had used strips up to now). I am gonna start a new post to see what people say to do.
    26Kgal IG Vinyl liner
    Hayward 1HP Superpump
    Hayward Pro Grid 4800 DE Filter
    thepoolcleaner pressure side cleaner

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