Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 4 of 4

Thread: subtle algae - CYA going up

  1. Back To Top    #1

    subtle algae - CYA going up

    FC:7
    CC:1
    TC:8
    pH:7.3
    TA: 60
    CH: 250
    CYA:70

    Algae popping up on edges so I figured I need a chock. Funny I started the year with a CYA of 0 and now its up so much, now the shock level is sort of crazy! I have the powder shock and pucks from the pool store I wanted to use up but now I truly see how they change all my levels. I just added 10oz baking soda to raise TA and pH and 2 jugs of bleach to shock (thats all I have on hand). If those pool chemicals raise the CYA so much, how can they get away with that, do people really just drain their pools and refill everytime the CYA gets too high from the chems?
    16,000 gallon, oval, in ground, fiberlass. WhisperFlow WFDS-26, 11/2 horsepower, Triton II Sand filter

  2. Back To Top    #2
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    Location
    East Texas
    Posts
    9,002

    Re: subtle algae - CYA going up

    yep, drain and refill,,,,,,,,,,,,,
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

  3. Back To Top    #3

    Re: subtle algae - CYA going up

    Well I dont have to yet right? 70 is still ok as long as i dont use anymore pool store ****!
    16,000 gallon, oval, in ground, fiberlass. WhisperFlow WFDS-26, 11/2 horsepower, Triton II Sand filter

  4. Back To Top    #4

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,084

    Re: subtle algae - CYA going up

    You will need to keep your FC around 5-8ppm with that much CYA.

    YOu also need to shock the pool at around 30ppm until you get rid of the algae.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

Posting Permissions

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