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Thread: water ok to swim in?

  1. Back To Top    #1

    Join Date
    Nov 2012
    Ontario, Canada

    water ok to swim in?

    We opened our pool two days ago. When I got it tested today they said all was good except to add some stabilizer. The water is perfectly clear but green. When I asked if it was ok to swim in it she said yes since my chlorine level was in the recommended range, but that I should increase the chlorine to kill the algae and turn it bluer. Is this right? I thought it wasn't safe to swim in green pools because of algae.
    Total Chlorine is 1.2 ppm. I increased the swg from 10% to 17% (not sure if this is enough).
    Other stats:
    Saturation Index: -0.8
    Total Chlorine: 1.3 ppm
    Combine Chlorine: 0.1 ppm
    pH: 7.3
    Hardness 95 ppm
    Alkalinity: 97 ppm
    Cyanuric Acid: 10 ppm
    Copper: 0 ppm
    Salt: 3200 (my swg reads 3500)

    50,000L saltwater pool with vinyl liner and sand filter

  2. Back To Top    #2
    elwood58's Avatar
    Join Date
    May 2012
    Sun City West Arizona (2nd Home)

    Re: water ok to swim in?

    Pool needs to be below shock level on FC and clear. Technically you might meet this requirement, but you need to do the SLAM process to get rid of the green, which will mean high FC.
    14100 Gal IG MiniPebble, Pentair Intellichlor IC-40 SWG, Sand Filter, Pop Up Cleaning, Intelliflo VS Pump, Aquacal Heatpump/Chiller, 1/4 Acre Desert Landscaped, Lots of Deck. Built in 1984, updated in 2012 and 2014
    "If you don't measure it, you can't manage it!"

  3. Back To Top    #3
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: water ok to swim in?

    What test kit are you using?
    Are you saying the water is clear but tinted green, or that the water is clear but there is green on the walls?

    Your CYA is way too low for a SWG pool, but you should not raise it above 40-50ppm until after you follow the SLAM Process and pass the 3 criteria to stop.

    As long as you can see the bottom and the FC is in range, the pool is safe to swim in, just may not be very appealing.
    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
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  4. Back To Top    #4
    pwrstrk's Avatar
    Join Date
    Aug 2012
    Elverson Pa.

    water ok to swim in?

    Correct me if I'm wrong, but those look like pool store test results. If they are they will be no help to SLAM the pool. You need to be able to accurately test your water's parameters. We don't put a whole lot of faith in pool store testing.
    Here are the Test Kits we recommend. The TF-100 is the best value and the one many members use. Get the XL option for the SLAM process as it has extra reagents for testing FC. 😎
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

  5. Back To Top    #5
    Charlie_R's Avatar
    Join Date
    May 2013
    Mexico, MO

    Re: water ok to swim in?

    Where are you located?

    You use of Litres suggests outside the U.S., so getting one of our recommended test kits could be difficult.
    15'x48" 4500 gallon Intex pool, buried 1.5 ft. Pac-Fab Dynamo 3/4 hp pump. Hayward S180T sand filter, bought used. Taylor K-2006 test kit. Rocket mass heater based wood fired pool heater.

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