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Thread: Algae ID Please

  1. Back To Top    #1

    Join Date
    Jun 2007
    Location
    South Carolina
    Posts
    28

    Algae ID Please

    I'm the guy with high CYA who has converted to the BBB pool method. For the last two weeks I have maintained FC above 20ppm. I have used PolyQuat 60 at the "algae present" levels. Now I have what looks like algae at the seams on the bottom of the liner. Some accumulation away from the seams but in the vivinity of the seams. I have excellent circulation from the pump. I'll describe it as best I can.

    You can vacuum it out but it starts to slowly gather the next day at the seams. You can just pass a brush over it softly and it disappears. The color is a very "slight" beigey/brown. It forms in a circular pattern (quarter size away from the seam or in a straight line within the seam. I can use a sock in the skimmer and it will only slightly discolor it in a vacuuming. The discoloration just looks slightly dirty.

    If it is algae I question if it is dead or alive at the rates of FC I have maintained plus using the PQ60 first at the "algae present dosage" then following up every 4-5 days with the maintenance dosage.

    1- Sound like an algae?

    2- Any ideas on ID from you pros?

    3- Dead or alive (best guess) - how do you tell the difference?

    4- Recommend a different approach?

    My FC and TC are only one drop apart - almost no CC's above 20ppm)
    My pH is about 7.7
    My alkalinity is 140
    My CYA is 117+
    Hardness - 210
    Copper - 0.0
    Iron - 0.0

    Many thanks - it just hasn't been a car free year for me........... Jim

    P.S. My water has been crystal clear (blue diamonds) since I opened it this year!
    14 X 28 vinyl lined IG pool with Hayward pump/filter, an Aqua Genie skimmer and a TF test kit.

    For the first five years I thought pool maintenance was a snap. Little did I know what my future held using stabilized chlorine. BBB from now on....... you live and learn.
    P.S. Understand that when you ask questions the answer may not be one you like.

  2. Back To Top    #2

    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    28,409
    Hi, Jim,

    From your description, I think you have killed some algae, very likely mustard algae, and it hasn't been brushed up enough to get suspended in the water and then filtered out. Continue to brush it back up every time it settles. I think it will filter out in another day or so.

    Obviously with that CYA level, you must keep your chlorine high (8+) continuously, or it will continue to reappear.

    All the above is nothing more than a WAG based on some personal experience and what I've read here on the forum. If it goes away using the ideas I suggested, please give me full credit and genius status. If it's still there on Sunday, I'll swear I never heard of you.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3
    I think it sounds exactly like what's in my dad's pool and many, many others this year, possibly pollen of some sort.

    You can shock, brush, and it settles right back in and looks the same. Wierd stuff...

    See my thread that has a poll for pics.

  4. Back To Top    #4
    Quote Originally Posted by Rangeball
    I think it sounds exactly like what's in my dad's pool and many, many others this year, possibly pollen of some sort.

    You can shock, brush, and it settles right back in and looks the same. Wierd stuff...

    See my thread that has a poll for pics.
    I have that, but mine doesn't discolor anything...I'm not using a sock, just the skimmer basket, but it's not discolored in anyway.
    14 x 32 x 6 (ave depth) 20K gallons - IG gunite pool. Challenger 1.5 hp pump and cartridge filter.

  5. Back To Top    #5
    Quote Originally Posted by Rangeball
    I think it sounds exactly like what's in my dad's pool and many, many others this year, possibly pollen of some sort.

    You can shock, brush, and it settles right back in and looks the same. Wierd stuff...

    See my thread that has a poll for pics.
    that is what we in the pool business call yellow algae not pollen lmao

  6. Back To Top    #6

    Join Date
    Jul 2007
    Location
    ontario, canada
    Posts
    82
    I'm experiencing the very same things in trying to get my dead algae out of my water. That's what I assume it is anyway. I had algae...I put in a lot of bleach for days...and now I have something similar to what you're describing. Mine does seem to get better every day and my chorine has been holding for days now.
    Good luck with it!
    N
    P.S. I'm not a pro
    [color=#0000BF]16x32 inground vinyl liner approx 23 000 gallons
    22" cyclone sand filter, 1 HP pump
    solar cover, solar heating panels
    Taylor K-2006 test kit

  7. Back To Top    #7
    gonefishin's Avatar
    Join Date
    Apr 2007
    Location
    Joliet, Il.
    Posts
    389
    I really think that it's helpful to take a sample...let it settle in the jar and then post the pictures and describe what you see. In my opinion...this is an easy step that could aid in proper identification of the substance in your pool. Which may get your pool cleaner quicker.

    dan
    21' Aqua-Leader AGP (10,200 gallons).
    Hayward cartridge filter and two speed pump.
    Aqua-Cal HeatWave 100k (HeatPump)
    Salt 3200ppm (in non-salt water pool)
    Borates 20ppm (slowly raising)
    Aqua-Rite SWG

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