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Thread: Green, but is it algae?

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    Green, but is it algae?

    I had an algae attack last summer. TFP proved quite helpful and I got rid of it in 3-4 days. But now, I have some green. Been there a week. It is not acting like it did last year.

    I have the recommended test kit. And my numbers are written down at home (and I will post back when I get home from work). Things seem to be in the normal range. I even brought the FC up to 15 to slam it. CCs have been 0. CYA has been steady at 40-45. But it doesn't go grey/white. And it doesn't seem to get any darker.

    Now, the tree has been dumping quite a few maple keys (helicopters) and leaves and there were a few good rains. Somebody else told me they had some issues after the last few rains. I get very little accumulation on the sidewalls. I get some green splotchy (is that even a word) on the bottom. I try brushing (to help it get into the filters) and vacuum but I don't seem to be making a dent. Pump flow seems normal (I have 2 x 1600 gph, one set up normal, one for the skimmer).

    My wife is fed up. She says just drain and clean and put it away for the season. We usually stop using in after labor day anyway.

    Really looking for ideas and opinions on this one.
    Intex 18'x48" Ultra Frame
    2 - Intex 1500gph Type A cartridge filter pumps
    One thru-wall skimmer.
    Manual care monitored with the TF100 Kit

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    Join Date
    May 2014
    Location
    New Jersey
    Posts
    30

    Re: Green, but is it algae?

    Could be chemical imbalance or bad circulation/filtration. Post your results so we can have a better idea.
    13,500 Gallon 24' x 52" AGP
    Hayward DE EC50 w/1.5HP Pump
    Taylor K-1004 Test Kit
    Intek 2014 SWG - Copper Disconnected

  3. Back To Top    #3

    Re: Green, but is it algae?

    Okay. Got some fresh measurements from today.

    Saturday my numbers were:

    FC 16
    CC .5
    CYA 40
    TA 90
    CH 100
    PH 8

    I couldn't do anything with the pool on Sunday (yesterday)

    Today:

    FC 2
    CC .5
    CYA 40
    TA 100
    CH 130
    PH 8.2+ (can't measure higher but I think it is judging by color)

    I was surprised to see CH take a bit of a jump.
    Intex 18'x48" Ultra Frame
    2 - Intex 1500gph Type A cartridge filter pumps
    One thru-wall skimmer.
    Manual care monitored with the TF100 Kit

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    Join Date
    May 2014
    Location
    New Jersey
    Posts
    30

    Re: Green, but is it algae?

    I suspect it's an algae problem because of the FC loss. You need to shock your pool and hold it at shock level until you pass the OCLT.
    13,500 Gallon 24' x 52" AGP
    Hayward DE EC50 w/1.5HP Pump
    Taylor K-1004 Test Kit
    Intek 2014 SWG - Copper Disconnected

  5. Back To Top    #5

    Re: Green, but is it algae?

    Sounds about right. OCLT from 16 down to 9. Boo.
    Intex 18'x48" Ultra Frame
    2 - Intex 1500gph Type A cartridge filter pumps
    One thru-wall skimmer.
    Manual care monitored with the TF100 Kit

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    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,077

    Re: Green, but is it algae?

    Green = Algae.

    That's not the case 100% of the time but pretty close to it.

    Time to SLAM the pool.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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