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Thread: How can I minimize algae while pump is not in service?

  1. Back To Top    #1

    Join Date
    Aug 2011
    Tucson, Arizona

    How can I minimize algae while pump is not in service?

    My pump has died and the new one is already ordered but will not arrive until next week. The water is already starting to turn green as the pump has been off for about a week now.

    Is there anything I can do to minimize the algae in the pool until my pump arrives and is installed?
    35' x 16' ~22,640 Gallons
    8.5Ft In Ground Plaster Chlorine
    Filbur FC-1293 120Sq. Ft. Cartridge Filter in Hayward C1200 Star Clear Plus Enclosure
    1 1/2" PVC & Century Centurion Switchless Motor 3/4 HP

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: How can I minimize algae while pump is not in service?

    Add bleach and brush the pool to mix it. My pool was without a pump for 2 weeks and never turned green ... got dirty, but no algae.

    You can try to keep the FC up closer to shock level to start the kill and hold off the algae, but it will need a lot of brushing to keep the water mixed (try a whale brush)

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  3. Back To Top    #3
    BoDarville's Avatar
    Join Date
    Jun 2012
    DFW, Texas

    Re: How can I minimize algae while pump is not in service?


    Here's a thread from another member who was without power for over a week after a major storm followed by temps in the upper 90's to over 100F. Pretty much what JB stated, just contains more details if you're interested.

    Also second the use of the Wall Whale brush. I replaced my old brush with a Wall Whale XL and the difference is night & day.
    Gold Supporter, TFP Lifetime Supporter, 26,680 gal Plaster IGP 3.5 - 10' depth / Attached Waterfall Spa, Manually Chlorinated, Triton Sand Filter, 1.5 HP * 1.1 SF = 1.65 SFHP 1-speed Pentair WhisperFlo WF-26 Pump, 400K BTU NG Teledyne Laars Series One Heater, Polaris 360, Test Kit Comparison, Chlorine/CYA Chart, SLAMing Your Pool, OCLT
    A good test kit is an investment, not an expense.

  4. Back To Top    #4
    happyheathen's Avatar
    Join Date
    Aug 2012
    Sacramento CA

    Re: How can I minimize algae while pump is not in service?

    If you have a sump pump or other pump, there is no reason it can't do pool water. I put a 5' length of hose on a junk pump with a heavy bit of pipe on the end. If I string it out, the pump will do a bit of circulating. It would also be the logical place to dump bleach - as it settles, the pump will pick it up and spread it around.
    Note: the weight I use is about 1 pound (old, real brass drain pipe) - the pump whips it around nicely. Use a MUCH heavier weight if you want the end to stay where you put it.
    1980's 15,000 Gal IG Plaster; 1 1/2 hp Hayward Northstar; Hayward Swimclear C3025 Cartridge Filter (325 sq ft, nom.); Pentair Legend; Polaris PB4-60; Equipment 40' from pool. p.s.: it's an aye-aye.

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