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Thread: New pool...water turned green immediately...

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    Join Date
    Jun 2013
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    central texas
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    New pool...water turned green immediately...

    Our 20k gallon pool is just about done. the pebble tech was completed and we began to fill the pool yesterday morning. Electricity will not be hooked up until tomorrow so we can't run anything ATM. The water starting turning green almost immediately during fill. Is it normal for the water to turn green this fast without everything up and running? Should it clear up quickly once we have power? Do I need to keep the teenagers out of the pool for now? Thx
    19,700 gallons non SWG
    Pentair DE quad 100 filter
    Auto chlorinator and nature 2
    Inground pebble
    Intelliflo variable speed 3 HP pump

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    JasonLion's Avatar
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    Re: New pool...water turned green immediately...

    Is the water a clear transparent green? Or is it murky/cloudy green?
    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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    Mod Squad jblizzle's Avatar
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    Re: New pool...water turned green immediately...

    Do you add any chlorine (bleach) to the water?

    Generally no one should be swimming if there is not at least some FC in the water, although the dangers are low in a private residential pool.

    Do you have one of the recommended test kits already? Post up a full set of results. Although realize that the CYA is zero if you have not added any yet.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    Join Date
    Jun 2013
    Location
    central texas
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    Re: New pool...water turned green immediately...

    I don't have a kit yet. The water is clear green
    19,700 gallons non SWG
    Pentair DE quad 100 filter
    Auto chlorinator and nature 2
    Inground pebble
    Intelliflo variable speed 3 HP pump

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    Mod Squad jblizzle's Avatar
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    May 2010
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    Re: New pool...water turned green immediately...

    Well, you need to order on of the recommended test kits ASAP (see link in signature ... realize the TF100 is the best value).

    Clear green points to metal in the water ... see the article in Pool School that describes the sequestrants that you need to use to prevent the metal from causing stains.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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    Join Date
    Jul 2011
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    Re: New pool...water turned green immediately...

    Tap water that comes from nearby reservoirs often has a slight tint green after a few feet have filled the pool and is very normal, and is not necessarily a metal problem. The water may just need some good filtration to clear the organic matter. Swimming pool filters are generally much more efficient than local water municipalities filters are capable of.
    Of course, it also could be from iron in the source water and turned green after it has been aerated by oxygen. Again, the iron precipitate will eventually filter out and adding sequestering agents will certainly help.

    Tap water that comes from nearby wells is normally very clear due to natural filtration of traveling or percolating through the ground.
    IMO, swimming is permissible and won't cause problems as long as the water has a chlorine residual established and is near balanced. The pebble finish is very hard at this point.

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