Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 6 of 6

Thread: Prevent algae before pool opening?

  1. Back To Top    #1

    Prevent algae before pool opening?

    Every year, I open the pool in May. About a month before opening, the pool turns green and I have a 1-2 week fight getting it crystal clear after I open. Is there anything I can do to prevent this? A little chlorine or algaecide pre-opening?
    16 x 32 18,000 gal IG vinyl pool. 1.5HP SuperFlo VS pump. Hayward C4030 425 sq ft cartridge filter. Hotspot FPH heat reclamation pool heater.

  2. Back To Top    #2

    Join Date
    May 2011
    Location
    lebanon tn
    Posts
    370

    Re: Prevent algae before pool opening?

    You can start circulating water and add fc as if opening. With the GDP method fc is what kills algae. And an early start may stop it before it gets a hold in your pool. Remember to brush walls also
    24ft x 52in AGP 18000 gal
    sand filter, 200#,1.5 hp single speed pump
    Wood deck (still in progress...)

  3. Back To Top    #3
    Mod Squad Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    17,343

    Re: Prevent algae before pool opening?

    The formula for opening is simple really - the sooner the better. While the water may still be chilly, the sooner you increase the FC level (and confirm other levels) to begin circulation/cleaning the better. Adding an algaecide after the water has begun to change color would be useless, and depending upon the algaecide used, could cause more problems later (copper). Open early, start water circulation, and adjust chemicals so the water can bounce-back is your best bet.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  4. Back To Top    #4

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,956

    Re: Prevent algae before pool opening?

    What is the "GDP" method?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  5. Back To Top    #5

    Join Date
    Jul 2013
    Location
    Long Island, NY
    Posts
    556

    Re: Prevent algae before pool opening?

    Yep they have it right, I'm in New York and when I had an intex pool I would open it in April to prevent algae growth. The earlier the better
    Location: Long Island, NY
    Gallons: 5000 Gallons
    Pool: 15' Saltwater 5000
    Filter: Pentair 1 HP Optiflow Pump w/ Clean & Clear 75Sq Ft Cartridge Filter
    SWG: Intex CS8110

  6. Back To Top    #6

    Join Date
    May 2011
    Location
    lebanon tn
    Posts
    370

    Re: Prevent algae before pool opening?

    GDP was supposed to be tfp. Bad thumbs on phone
    24ft x 52in AGP 18000 gal
    sand filter, 200#,1.5 hp single speed pump
    Wood deck (still in progress...)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •