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Thread: When i add chlorine to my 18x48 pool it turns green

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    When i add chlorine to my 18x48 pool it turns green

    ok im having trouble when i add chlorine to my 18x48 pool it turns green. i have been using iron out from walmart to turn it back clear it works perfectly but when i add this it take out all my chlorine. so im at clear water no chlorine or green water with everything testing normal levels. i have well water by the way and my pool has been up for a month now just green everytime i add chlorine so frustrated
    23k gal, IG, vinyl,sand filter, 1/2 hp Hayward, 2007 install, Hayward tiger shark

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    Join Date
    Mar 2007
    San Rafael, CA USA

    Re: When i add chlorine to my 18x48 pool it turns green

    Welcome to TFP!

    Are you talking about Super Iron Out? That's a household product, not for swimming pools. The product is designed to remove an iron stain (using citric acid), but not to sequester the iron in water to prevent it from re-staining. They expect you to rinse away the product and water away from the stain. Again, this is not for use in swimming pools.

    You should be using an HEDP-based metal sequestrant as described in the Pool School article Metals in the Water and Metal Stains. If you don't have existing stains, then you can skip the ascorbic acid treatment and just add one of the HEDP-based metal sequestrant products recommended.
    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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