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Thread: New Pool Build Next Door - Green Water

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    Join Date
    May 2010
    Location
    GTA Ontario
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    New Pool Build Next Door - Green Water

    Hi All,

    Our next-door neighbours have a new pool going in. During the construction process the heavy machinery has kicked up A LOT of dust and dirt and much of it ended up in our pool.

    Construction started last Tuesday, our pool went green Saturday AM and after 48 hours of SLAM-ing it hasn't improved much, and were getting heavy staining on the fiberglass stairs and ladder steps.

    Current #'s via Taylor K-2006

    FC 10.5
    CC .05
    PH 7.6
    TA 80
    CH 140
    CYA 30

    I've been trying to hold FC @ 12 PPM but it keeps dropping. Since Friday (posting this Monday AM) I've added a total of 10L of 12% liquid chlorine to get to, and maintain shock level of 12PPM.

    Should I stay the course with SLAM-ing? With the CC @ .05 and chlorine losses I'm assuming the answer is yes, but 10L of chlorine in 48 hours seem like a heck of a lot.
    40,000L (10,500G) 17 x 30 Pioneer "Trinity" Vinyl IG
    Hayward OmniLogic, Hayward TCELL925-CUL SWG, Hayward SP23520VSP MaxFlo Pump, Club Pro SM2506T Sand Filter, Hayward H-Series Heater, Zodiac G3 Cleaner.

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    Mod Squad JVTrain's Avatar
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    Feb 2014
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    Re: New Pool Build Next Door - Green Water

    That's a lot amount of chlorine for your size pool for two days (32 FC @ 12.5% bleach, 22 @ 8.25% bleach). Going to have the stay the course however.

    When you say staining on the steps and ladder, is that just where the dust is collecting or is it actual staining that won't go away with brushing?

    It's a shame their not doing more for dust control during the process. Excessive dust is usually discouraged with construction and many contractors will keep soil damp during excavation and use proper techniques during installation to minimize. Is it ground dust, concrete dust or otherwise... or all of the above?
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

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    Azgirl71's Avatar
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    Apr 2015
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    Re: New Pool Build Next Door - Green Water

    I think you answered your own question. Stay the course and complete the entire SLAM process. You can bump the target level to 15ppm I'd you cannot test every couple of hours so it does not fall below SLAM level. Just test and add as often as you can.
    Lisa
    Intex AG vinyl 15' x 48" 4,300 gallons due to skimmer install, Krystal Clear SF pump combo 2800 GPH, Krystal Clear SWG, Pool Blaster Max vacuum, Hayward thru the wall skimmer, TF 100 test kit with speed stir, K 1766 Taylor salt test, My SLAM Process

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    Join Date
    May 2010
    Location
    GTA Ontario
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    Re: New Pool Build Next Door - Green Water

    Thanks Azgirl71.

    Usually 10L lasts me a few weeks. Barreling through it in 2 days had me somewhat concerned.

    I'll keep on testing/pouring/testing/pouring!
    40,000L (10,500G) 17 x 30 Pioneer "Trinity" Vinyl IG
    Hayward OmniLogic, Hayward TCELL925-CUL SWG, Hayward SP23520VSP MaxFlo Pump, Club Pro SM2506T Sand Filter, Hayward H-Series Heater, Zodiac G3 Cleaner.

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    Azgirl71's Avatar
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    Re: New Pool Build Next Door - Green Water

    Yes, when something gets a hold of the pool, it takes time to get your pool back.
    Lisa
    Intex AG vinyl 15' x 48" 4,300 gallons due to skimmer install, Krystal Clear SF pump combo 2800 GPH, Krystal Clear SWG, Pool Blaster Max vacuum, Hayward thru the wall skimmer, TF 100 test kit with speed stir, K 1766 Taylor salt test, My SLAM Process

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    Patrick_B's Avatar
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    Re: New Pool Build Next Door - Green Water

    Yes, keep slamming. So yea...thats a fair amount of Bleach, but not enormous in volume, especially in a green pool. Follow SLAM, and don't let the FC dip low any more than you can help.
    TFP Moderator
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    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

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    Join Date
    Oct 2011
    Location
    Minnesota
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    Re: New Pool Build Next Door - Green Water

    Having you been running the filter 24/7?
    20x44 IG vinyl. Intelliflo, Pentair Cartridge Filter (420ft^2), Raypac 336K, Kreepy Krauly

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    Re: New Pool Build Next Door - Green Water

    Thanks all for reaffirming that I'm on the right path. Yes, the pump has been running 24/7 for sure.

    I can usually turn a funky pool around in 24 hours. The amount of time and volume of chlorine was unprecedented, thus my concern. We're also experiencing the peak pool weather of a very short pool season up here in Toronto, that makes a green pool especially unwelcome.

    I just picked up another 10L of chlorine... back to the measuring cup!
    40,000L (10,500G) 17 x 30 Pioneer "Trinity" Vinyl IG
    Hayward OmniLogic, Hayward TCELL925-CUL SWG, Hayward SP23520VSP MaxFlo Pump, Club Pro SM2506T Sand Filter, Hayward H-Series Heater, Zodiac G3 Cleaner.

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