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Thread: Looking for reasonalbly price effective general algecide

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    Looking for reasonalbly price effective general algecide

    Have a spot here and there of a yellow/brownish what I believe is an algae. It brushes off and a chemical that was rather expensive seems to have an effect but I'm wondering if there is such a thing as a reasonably priced general use algaecide chemical I can use in an underground plaster pool? Had to sit a puck in a sock on top of one today per Waterbear's post and thank you for that. Got rid of it. ALSO can someone tell me if the thing I see mentioned as a chlorine stick, 6% Chlorine and nothing else in a stick form that you can put into an auto dispenser like for pucks? Thanks to all...



    Thomsa
    It is what it is, and sometimes it's scary!
    AG-22200 gal 45x18x4
    1hp pump 19 inch 100 lb sand filter
    apx 45 gal per min
    Summerville SC.

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    Guest

    Re: LOOKING FOR REASONALBLY PRICE EFFECTIVE GENERAL ALGECIDE

    Quote Originally Posted by tfnyla7713
    HAVE a spot here and there of a yellow/brownish what I believe is an algae. It brushes off and a chemical that was rather expensive seems to have an effect but I'm wondering if there is such a thing as a reasonably priced general use algaecide chemical I can use in an underground plaster pool?
    Yes, it's called chlorine! Please post a full set of test resuls and we can take it from there.

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    Join Date
    Apr 2008
    Location
    Central Texas
    Posts
    326

    Re: LOOKING FOR REASONALBLY PRICE EFFECTIVE GENERAL ALGECIDE

    I haven't seen a hint of algae in my pool since I BBB'd it. The borates seem to do an awesome job of keeping algae at bay. Even the black algae that seemed to always have a hold on at least a few spots in the pool is now GONE. 8)
    26,000 Gallon Gunnite IGP
    2 HP Challenger High Head Pump
    60sf Nautilus DE filter
    Polaris 280

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    Re: LOOKING FOR REASONALBLY PRICE EFFECTIVE GENERAL ALGECIDE

    Waterbear,

    I think I have determined a part of the problem.

    18,560 underground plaster pool.
    Hayward DE filter
    FC 3.5
    TC 3.5
    PH 7.6
    T/A 100
    CH (waiting to order refills so I could not do this test)
    CYA 70

    I have been trying to keep the FC between 3.5-5.0 and now discover, looking at the CYA chart that with a CYA of 70, I should be targeted at 8.0 with a minimum of 5.1. I have just added proper chlorine to bring it up to 8.0 (Pool Calculator) and will measure it at the end of the day to see how much this So Cal sun - that hits it directly from 11:00 am till 5PM - burns off. I will see how this goes and determine if I need to drain water once I get a refill from TF. Please let me know if this all makes sense and if there is something else you or anyone might think is another approach. I would like to bring PH down a bit but want to wait till I get refills and can do a complete test. Again unless you have something to suggest. Thanks again as always for your help and time. I used your puck on the stain idea the other day and it worked like a charm.

    And thanks to everyone else who responded to this post.

    Best,


    Thomas
    It is what it is, and sometimes it's scary!
    AG-22200 gal 45x18x4
    1hp pump 19 inch 100 lb sand filter
    apx 45 gal per min
    Summerville SC.

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    Guest

    Re: LOOKING FOR REASONALBLY PRICE EFFECTIVE GENERAL ALGECIDE

    Bingo, sounds like you got it under control now! Why do you want to bring the pH down? 7.6 is about as perfect as you can get! If you are going be using bleach you might want to consider dropping your TA a bit though.

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