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Thread: Peroxide

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    Peroxide

    Just wanted to post for those that are not
    Aware of peroxide bring down the clorine levels.
    I saw in another post someone mentioning that peroxide will bring down fc
    So I gave it a wirl since my clorine was off the charts from the auto chlorinator.
    For my pool a 32oz bottle of 3% peroxide will bring down the fc about 1 full point (ppm)
    So I went to cvs and purchased 6 16oz bottles and dumped 5 in, within about 2'hours my fc is down to 3
    It was off the chart so needed to bring it down quick cause company was coming to swim
    Just wanted to post that it seems to work well and don't
    See any negative side affects
    18' x 33' Aqua leader AGP (~19k gal) w/hayward swimpro voyager cartridge filter and 2hp hayward pump.
    8 Gal LQ, hayward heater.

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    frustratedpoolmom's Avatar
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    Re: Peroxide

    With typical CYA levels, your FC will still drop by 50% on a sunny day. There really isn't any reason to use peroxide or any other chlorine neutralizer, since its safe to swim in "shock" level FC.

    If your FC is 3, is that your "min" or above according to your CYA level? Refer to the CYA Chart.
    Helpful links: Pool School; CYA/Chlorine Chart
    24' round AG pool, 52" high, Raypak heater; Waterway 2 spd Pump;
    150 Sq ft. Clearwater Cartridge Filter; Former and DISSATISFIED "Pool Frog" owner
    http://www.PerfectlyClearPoolService.com

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    Re: Peroxide

    Welcome to TFP!!

    I also read about the effect of peroxide on cl.

    The state of Maine requires it's use monthly on public pools, but doesn't say why

    Thanks for pointing out the cl neutralizing effect of hydrogen peroxide
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

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    Re: Peroxide

    I saw that note to and am thankful someone mentioned it. I know it's "safe" to swim in anything under shock level, but prefer not to subject my child, or others for that matter, to levels very high. In the event that I misjudged my SWG timing it is nice information to have on hand.
    Indiana, ABG 24'x52" Galveston by Blue Cascade (Craigslist buy w/part of deck included), 13,500 gallons, Intex SWG, solar panels mix 2, TF-100 test kit.

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    Re: Peroxide

    How many gallons is your pool?
    15,600 Gallon, 16' x 32' In-Ground Vinyl Pool
    Pentair VS 3050 pump, Quad DE 60 filter and SunTouch controller
    8 gallon Liquidator, Aquatherm EcoSun Solar Panels, 2 wheel ThePoolCleaner

  6. Back To Top    #6

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    Re: Peroxide

    Roughly speaking, the rule is that the volume of 3% hydrogen peroxide neutralizes the same volume of 6% bleach. So you can use The Pool Calculator to calculate the volume of bleach for a given FC "Target-Goal" difference and that same volume is the amount of 3% hydrogen peroxide needed to neutralize that FC amount.
    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"

  7. Back To Top    #7

    Peroxide

    Our pool is about 19000 gallons
    18x33
    I think that other post said
    16oz per 7500 gallons or something like that
    I cleaned out cvs and the lady was looking at me funny when I went up to the register with all the peroxide they had in stock, got the last 32oz and 6 16oz bottles.
    I fear between the pool and my saltwater fish tanks if the cops ever come to my house they are going to think I'm running a meth lab or something? Lol!
    18' x 33' Aqua leader AGP (~19k gal) w/hayward swimpro voyager cartridge filter and 2hp hayward pump.
    8 Gal LQ, hayward heater.

  8. Back To Top    #8

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    Re: Peroxide

    Quote Originally Posted by Highlandreef
    16oz per 7500 gallons or something like that
    That sounds right since 16 ounces of 6% bleach in 7500 gallons is 1 ppm FC.

    Note that you can get 27% hydrogen peroxide in Baquacil Oxidizer where 1 gallon is $17. Compare that with a case of 12 bottles of 3% that are 16 ounces each where the case is $15 so that's 1.5 gallons. So the Baquacil Oxidizer is FAR less expensive for the amount of hydrogen peroxide you get. The Baquacil Oxidizer is equivalent in price to $1.89 per gallon of 3% hydrogen peroxide.
    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"

  9. Back To Top    #9

    Re: Peroxide

    While I think that it is good to know that you can reduce the FC levels if necessary, I think that it is important not to use it too often. Careful management of the FC levels will give the best overall performance.

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    Re: Peroxide

    I think they expect me to shock weekly, regardless as to the c.c. level (know nothings ) and then neutralize the extra chlorine to get back down under 4 ppm.
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

  11. Back To Top    #11

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    Re: Peroxide

    I think I am adding and not hijacking ... I thought the easiest way to explain is with a back story. Hopefully this helps someone else?

    Checking the math... Pool Calculator says I would need 4 gallons 1 quart 6% bleach to go from the high side of my target FC (8ppm with 45 CYA) to shock level (16ppm).

    To do the opposite and go from 16 down to 8 ppm after holding a high FC level (26+) to rid my pool of mustard algae and a planned bbq tomorrow.

    1) I would need 4 gallons 1 quart of 3% peroxide to lower from my current FC 16 to get back down to an FC of 8.

    2) Here is the main part... If I use the baquacil oxidizer, 4.25 gallons of peroxide divided by 9 (because the oxidizer is 9 times more concentrated than hydrogen peroxide) means I would need a little less than 1/2 a gallon of the oxidizer? 4.25/9= 0.47 gallons
    20' x 40' / 33,000 gallon / IG / Vinyl
    200lb sand filter / 1hp pump
    4hrs full sun with about 45 min part sun before and after

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    JasonLion's Avatar
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    Re: Peroxide

    LelandJF, your math look right. Calculating it a different way, I get 68 oz, so you are certainly in the right ballpark.
    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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