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Thread: Stalled swamp conversion - need advice

  1. Back To Top    #1

    Join Date
    May 2011
    Location
    Orangeburg, NY
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    4

    Stalled swamp conversion - need advice

    Hello Forum members,

    In December we purchased a foreclosed home with an in-ground Anthony gunite pool. The house had been unoccupied with the pool covered for 2 years up to the foreclosure. The bank foreclosed on the house and replaced the cover with the typical steel metal mesh just in time for all the surrounding trees to drop their leaves and fill the pool. This spring, the water was black, with no visibility, and smelled really bad.

    After finding this forum (it’s really great!) I purchased a leaf rake, an aquabot, and a TF-100 test kit. Test results were:

    FC -0
    CC-0
    TC-0
    pH-7.5
    T/A-190
    CH-190
    CYA-0

    Many, many days were spent emptying leaves out of the pool and getting the pumps running. The only open water intake for the pump is the skimmer. I think there may be an intake at the bottom of the deep end, but it seems to be clogged or has a winterizing plug in it.

    The pool was shocked starting with 4 lbs of dichlor, adding 2 additional lbs of dichlor and bleach as needed to keep the shock level at 11 or higher. During this time the pump was only run during the day and was backwashed every few hours.

    After 4 full days, the chlorine level was stable overnight and after about a week, the pump could run overnight without stopping for backwash. During the entire time, the pool sides were scrubbed with a wire brush and the entire pool was cleaned with the help of aquabot.

    The water smelled much better and I could see the bottom of the shallow end of the pool. However the water looked yellow on the shallow side and greenish on the deep side. I remeasured FC and CYA

    FC-3
    CYA-<20

    Assuming this was tannin stained water, I added 4 lbs of dichlor to bring the pool back to shock level, added DE to the sand filter. Over the next several days, I added 2 lbs of dichlor and a gallon of bleach to keep chlorine levels over 13 in the hopes of eliminating the yellow color. The pump was running constantly over this time period and I connected the vaccum to the pump in order to draw water from the bottom of the deep end instead of the skimmer. The water color has remained the same. There has been a slight improvement in depth of visibility on the deep end ~6 feet.

    Becoming impatient, I put about 4 gallons of pool water in a bucket and added a few cups of bleach to it. After 2 days, there was no visible improvement in water color in the bucket relative to the pool.

    Current levels in the pool are:

    FC-14
    CC-1
    TC-15

    Should I continue shocking and filtering? Any additional advice or test recommendations would be greatly appreciated.

    Thanks,
    25K Gallon IG Plaster/Gunite
    Sand Filter 1 hp pump
    Metro NY

  2. Back To Top    #2
    JasonLion's Avatar
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    Silver Spring, MD
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    Re: Stalled swamp conversion - need advice

    Welcome to TFP!

    The yellow and green colors are probably iron in the water, especially if the water is fairly transparent now. I would try adding a startup dose of sequestrant.
    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

  3. Back To Top    #3

    Join Date
    May 2011
    Location
    Orangeburg, NY
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    Re: Stalled swamp conversion - need advice

    Sounds good. I have Jack's magic magenta stuff. I would like to try it in the bucket first. Does it matter what level of FC is in the water? Will the sequestrant work in a bucket or does it need to be filtered?
    25K Gallon IG Plaster/Gunite
    Sand Filter 1 hp pump
    Metro NY

  4. Back To Top    #4
    JasonLion's Avatar
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    Re: Stalled swamp conversion - need advice

    The sequestrant will work in the bucket, but you can't always see the tint/coloration of the water clearly in a bucket.
    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

  5. Back To Top    #5

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    Re: Stalled swamp conversion - need advice

    Wow - this stuff is pretty potent. I added 2 oz to the 5 gal bucket and turned the water pick. Substantially diluting the bucket (20:1) resulted in clear water. I'll pick up another bottle and add to the pool.
    25K Gallon IG Plaster/Gunite
    Sand Filter 1 hp pump
    Metro NY

  6. Back To Top    #6
    JasonLion's Avatar
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    Re: Stalled swamp conversion - need advice

    Great
    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

  7. Back To Top    #7

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    Re: Stalled swamp conversion - need advice

    How long does it take for the Jack's Magic Magenta Stuff to work? I have added 4 - 32 oz bottles (128 oz) to the 25K gallon pool, waiting 2 or 3 days between bottles. So far, the pool color is unchanged.

    I also repeated the bucket experiment. The magenta stuff did not work right away, but after a few days, the yellow color was gone, but there were large white particles in the bucket. I'm just wondering how long to wait to add more magenta stuff and if there is anything else I should be checking.

    thanks
    25K Gallon IG Plaster/Gunite
    Sand Filter 1 hp pump
    Metro NY

  8. Back To Top    #8
    JasonLion's Avatar
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    Re: Stalled swamp conversion - need advice

    If it is going to work it will work in four to six hours.

    Some of the other colors of Jack's are better than Magenta. Jack's Magic the Pink Stuff (regular), the Blue Stuff (fresh plaster), and the Purple Stuff (SWG) are all superior in this situation.
    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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