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Thread: Algae on grout

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    Join Date
    Jul 2013
    Location
    Placentia CA
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    5

    Algae on grout

    I have been maintaining the chemical balance for over a year now with pretty good success thanks to this site and a TFT kit except for 1 recurring issue, green and black algae on the tile grout at the top of the pool. About a month ago we scrubbed it all away and now its back. Any suggestions?

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    bobodaclown's Avatar
    Join Date
    Apr 2011
    Location
    Lakeland, FL
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    2,351

    Re: Algae on grout

    It's probably because it doesn't stay submerged in the chlorinated water. I get a little bit also.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

  3. Back To Top    #3

    Join Date
    Aug 2010
    Location
    Dallas, TX
    Posts
    4,052

    Re: Algae on grout

    Do us a favor and add your pool specifics to your signature.

    Do you use an SWG for chlorine source? If so, are you targeting FC of 3? I had this problem when I kept my FC at 3, and found that FC was dropping below the minimum, especially at the water line. I have bumped my target up to 5-6, and haven't had the problem since.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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  4. Back To Top    #4

    In the Industry

    Join Date
    May 2013
    Location
    Deep East Texas
    Posts
    76

    Re: Algae on grout

    Try changing your return jet pattern toward problem areas.
    In ground 25,000 gallon - vinyl liner - Sand filter - residential pool
    Also maintain two commercial 190,000 gallon competitive indoor bromine facilities -9x Sand filters

  5. Back To Top    #5

    Join Date
    Jul 2013
    Location
    Placentia CA
    Posts
    5

    Re: Algae on grout

    I will try to bump up the levels to 5-6. Thanks.

  6. Back To Top    #6
    wjr75's Avatar
    Join Date
    Jun 2013
    Location
    IL
    Posts
    816

    Re: Algae on grout

    A couple of canon ball jumps every week will help get the chlorine splashed up on the tile above the waterline. I have a 6 year old that does it for me
    Inground 22k gallon gunite 15x31 main pool, 15x7 wading pool/sunning deck, hot tub/with overflow (9' octagon with limestone top) & slide NSWG, Aqua Blue Pebble Sheen
    Filter dual cartridge Sta-rite 450sq/ft, TF-100 Test Kit
    Heater Raypak 2100 400k btu cupro-nickel exchanger
    Auto pool cover, Polaris 280 auto pool cleaner, Jandy AqualinkRS8 Remote Control System

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