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Thread: Quick question on Ascorbic Acid Treatment

  1. Back To Top    #1

    Join Date
    Jun 2013
    Location
    Chester, NH
    Posts
    19

    Quick question on Ascorbic Acid Treatment

    Quick question on Ascorbic Acid Treatment. I did this about 1 1/2 weeks ago and it worked great. I slowly brought the Chlorine back up, everything great. Then it got hot and humid and the water got cloudy. I then raised the chlorine to fight the cloudiness (about 1 week into the process with PH at 7.2) and the stains came back. I know I should have consulted here first but I didn't. Right now, the water is greenish (like it was before the treatment) with stains forming on the pool. I have let me Chlorine drop way back down. I still have a bunch of Ascorbic Acid so... would you recommend doing that again or just putting in Metal Magic (on my way to get some now). One more note is that I couldn't find the good sequestrant originally so I used Mineral Magnet from Namco. I believe this was a bad choice but I'm now off to get the good stuff.

    Thanks.
    13,000 gal, AG, Hayward sand filter, 1 HP Pentair Dynamo (currently broken), 2008, use pool frog system

  2. Back To Top    #2

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

    Re: Ascorbic Treatment to rid Pool of metal stains

    According to this MSDS, the NAMCO Mineral Magnet is HEDP at 60% concentration. You need to add metal sequestrant regularly, probably once a week. Also, before shocking or raising the FC high, you want to lower the pH first. At this point you can try lowering the pH and adding more metal sequestrant and see if that is enough; if not, you can redo the ascorbic acid treatment.
    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"

  3. Back To Top    #3

    Join Date
    Jun 2013
    Location
    Chester, NH
    Posts
    19

    Re: Ascorbic Treatment to rid Pool of metal stains

    Thank you. I tried a bottle of sequestrant over the weekend with my ph low but no good results (the namco stuff). It actually continued to get worse, especially once I lost my pump. Luckily I bought extra aa when I got it so I'll give that another shot tonight as soon as I get my new pump hooked up. At least the mineral magnet is HEDP I just need about 1 2/3 as much as Jack's but at least I can get it down the street. The store that was supposed to have Metal Magic doesn't really carry it.
    13,000 gal, AG, Hayward sand filter, 1 HP Pentair Dynamo (currently broken), 2008, use pool frog system

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