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Thread: Algae or Just Pollen and or Dirt?

  1. #21
    Junior Member
    Join Date
    Jun 2007
    Location
    Long Island, NY
    Posts
    28

    Re: Algae or Just Pollen and or Dirt?

    I am going through the same issue. I have been fighting this battle for 3 years now. Everyday I vac the pool and by the next morning I have the spots in the depressions of the liner. They look greenish in color. They vac easily and will dissipate if I brush them. I keep my levels right where they should be. I have done the overnight chlorine test and that too is fine. I added sand to my filter this year to bring up to the proper level as all the backwashing last year I lost a bunch. I was hoping this would help but it has not. I am at a loss as to what this stuff forming on the bottom of the pool could be. This is very frustrating as all my test and levels are indicating there is no algae in the pool but these spots show up every morning.
    Thanks,
    Brian

    18' round x 52" vinyl AGP holding aprox. 7633 gallons of crystal clear sparkling water, most of the time. Hayward 180 sand filter, 1 hp pump and 2-2x20 Fafco panels is parallel.

  2. #22
    Member
    Join Date
    Sep 2011
    Location
    Omaha, NE
    Posts
    73

    Re: Algae or Just Pollen and or Dirt?

    Well, if my guess is correct, and my situation is the same as yours, then the problem is inside the filter. I am not sure what your innards look like on your filter, but I think mine must have a small crack in the tube/pipe that leads from the bottom laterals up to the top of the filter where it then exits to the pool return.

    I just tried putting 5 cups of DE on top of my sand, thinking that the sand was not trapping the "fine silt" and my only conclusion is the pipe. My pool is clean during the day until I turn on the filter.

    On a plus note, my water is very clear now that I put that DE in trapping the small micron stuff!!!!
    16X24 Oval Doughboy
    11,000 Gallons~
    .75 HP Pump
    Sand Filter

  3. #23
    Junior Member
    Join Date
    May 2012
    Location
    Houston, TX
    Posts
    16

    Re: Algae or Just Pollen and or Dirt?

    I seem to be having the same problem for the past 2 weeks. The greenish tinge puffs up like a cloud even when I just plonk the brush in the water,i.e., it brushes off fairly easily. Between my husband & me, we have been testing the water everyday now, brushing 1-2x/day, tiger shark running 4-8hrs/day, pump running 12 hrs. My numbers have been good (2-week range): FC 3-6, CC=0-0.5, CYA 30, TA 80. Even w/ shocking 2x (passed all criteria), the "dust cloud" just comes back. Should I just shock again, raising it to mustard shock level this time?
    Husband & Wife team from Houston, TX
    18k, IG pool, w/ pebblesheen
    Hayward Ecostar 1hp variable speed pump (for pool)
    Hayward Super II pump 2hp (for sheer descents)
    Another (?) pump for swim jet
    UltraPure Ozonator
    Swimclear Cartridge filter
    ProLogic Control

  4. #24
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    20,973

    Re: Algae or Just Pollen and or Dirt?

    If you passed the OCLT, it's probably just dust.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 1.5hp Dynamo pump. 24" Pentair Sand Dollar Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit
    You can stop SLAMing your pool when you pass the OCLT (You lose 1ppm or less FC overnight, & You have .5ppm CC's or less) & your water is clear.

  5. #25
    Junior Member
    Join Date
    May 2012
    Location
    Houston, TX
    Posts
    16

    Re: Algae or Just Pollen and or Dirt?

    Yup, passed the OCLT 2x.
    And surprisingly, when we had rain 2days in a row, the pool water got crystal clear. Is that another indication that this could just be dust?
    I'm at my wits end!
    Husband & Wife team from Houston, TX
    18k, IG pool, w/ pebblesheen
    Hayward Ecostar 1hp variable speed pump (for pool)
    Hayward Super II pump 2hp (for sheer descents)
    Another (?) pump for swim jet
    UltraPure Ozonator
    Swimclear Cartridge filter
    ProLogic Control

  6. #26
    Senior Member dattia's Avatar
    Join Date
    Jun 2008
    Location
    West Chester, PA
    Posts
    511

    Re: Algae or Just Pollen and or Dirt?

    I am battling this as well, but have made significant gains this week. I have placed 2 skimmer socks in my skimmer (not sure how inground systems work, so this may or may not be possible for you). I rinse them several times per day as they are really trapping the gunk. I also throw a pair of pantyhose in on top of those two skimmer socks when I vacuum for an extra measure. Last week I had this silt spread out over the entire pool...enough that every pass with the vacuum left a visible 'clean' path. Each day has been getting better, the water is now clear and sparkling. Today when I went out, there are just a few little random spots.

    My problem is stemming from a filter issue that is allowing dirty water back into the pool during vacuuming... and while I haven't solved that issue, attacking the problem from the other side of my filter (at the skimmer) has proved to be working for me. I have a sparkling pool... and that is what I wanted. This approach may work for you too.
    27' round AG
    Hayward Matrix 1 1/2 HP Pump
    Hayward S210T Sand Filter

  7. #27
    Senior Member jule's Avatar
    Join Date
    May 2010
    Location
    New London, Wisconsin
    Posts
    139

    Re: Algae or Just Pollen and or Dirt?

    Quote Originally Posted by dattia
    I am battling this as well, but have made significant gains this week. I have placed 2 skimmer socks in my skimmer (not sure how inground systems work, so this may or may not be possible for you). I rinse them several times per day as they are really trapping the gunk. I also throw a pair of pantyhose in on top of those two skimmer socks when I vacuum for an extra measure. Last week I had this silt spread out over the entire pool...enough that every pass with the vacuum left a visible 'clean' path. Each day has been getting better, the water is now clear and sparkling. Today when I went out, there are just a few little random spots.

    My problem is stemming from a filter issue that is allowing dirty water back into the pool during vacuuming... and while I haven't solved that issue, attacking the problem from the other side of my filter (at the skimmer) has proved to be working for me. I have a sparkling pool... and that is what I wanted. This approach may work for you too.
    I've used the skimmer socks during opening, but will begin following your tip here dattia, to see if that helps. Thanks for suggesting it!
    22 ft octagon, inground, 4 ft ave depth - figured @ 11,400 gallons, well water
    Steel walls with sand bottom and vinyl liner : under full sun
    Harmsco Betterfilter w/14 paper cartridges
    1 hp Hayward motor

    Baqua to Chlorine in 2010.

    ~Wisconsin~

  8. #28
    Junior Member
    Join Date
    May 2012
    Posts
    2

    Re: Algae or Just Pollen and or Dirt?

    I am having a similar issue as the person in Okla. I am in northeastern Okla. What is DE? Is this similar to sand only coarse?
    Dave
    Santa Clarita, California
    1) 22000 gallons
    2) Jandy cartridge filter
    3) IG (in ground), 6 years old
    4) pebble tec

  9. #29
    Junior Member
    Join Date
    May 2012
    Posts
    2

    Re: Algae or Just Pollen and or Dirt?

    I think I got it. Media that goes in a DE filter system
    Dave
    Santa Clarita, California
    1) 22000 gallons
    2) Jandy cartridge filter
    3) IG (in ground), 6 years old
    4) pebble tec

  10. #30
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    20,973

    Re: Algae or Just Pollen and or Dirt?

    Yep, you got it. It's Diatomaceous Earth.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 1.5hp Dynamo pump. 24" Pentair Sand Dollar Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit
    You can stop SLAMing your pool when you pass the OCLT (You lose 1ppm or less FC overnight, & You have .5ppm CC's or less) & your water is clear.

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