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

Thread: First Time with Algae

  1. Back To Top    #1

    Join Date
    Jun 2012
    Location
    Howard City, MI
    Posts
    54

    First Time with Algae

    Hello. Since I found this sight, taking care of our new pool has been super easy and I thought I had a grasp on it all. Even just purchased a Taylor Complete FAS-DPD test kit which is awesome.!!!!!

    However, just started noticing that pool floor seemed to have a "yellowish" tint around the edges of the bottom and there have been several times when skimming I have pulled out clumps (2-3) of "asterisk shaped" matter. Today I used kids goggles to verify what was on bottom around edges and it was indeed yellow/oranges and wiped away with my hand. I am guessing this is algae.

    My current levels are:
    FC = 2.5
    pH = 7.5
    TA = 110
    CYA = 35-40

    I have never had this issue before so want to make sure I attack it properly. When I plug these numbers into the Pool Calculator, in the "Suggested FC Level for Mustard Algae" it says 24. Do I then plug that 24 into the top area where FC is located and in the "Target" box? If this is correct, it tells me to add 288 oz of bleach.

    WOW! Is that right? And if so, do I add the 288 oz of bleach all at once? Do I keep my filter running all night and retest in the morning?

    I know the info is in the Pool School, but I want to make sure I am translating it all correctly and need a little reassurance from the "experts". Thanks so much. You guys are awesome!!!!!
    Above-Ground Pro Series 18'x48" Metal Frame - Approx 6,450 gallons
    Skimmer Filter System (cartridge): SFS1000 w/ F1500C Pump: 120watts/2.0amps/1500g.p.h
    Purchased & Installed: 6/7/12 (week of)

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: First Time with Algae

    You have figured out Pool Calculator correctly. That's only a bit over 2 gallons.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  3. Back To Top    #3
    UnderWaterVanya's Avatar
    Join Date
    Jun 2012
    Location
    Mint Hill, NC
    Posts
    2,589

    Re: First Time with Algae

    Remember that bleach is only 6% Sodium Hypochlorite - the remainder is water. Of that 2 gallons - only 6% is actually the chemical you need - which stinks but that's the price of not adding CYA over and above what you need.
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

  4. Back To Top    #4

    Join Date
    Jun 2012
    Location
    Howard City, MI
    Posts
    54

    Re: First Time with Algae

    Awesome.....I think I am getting this down.

    Now, few more questions:

    1) Do I add the 288 oz all at once tonight?

    2) Do I need to leave my filter running all night? (If so, can filter run while pool cover is on?)

    3) That is all I need to do to get rid of algae prob, is add the bleach? Then obviously scrub tomorrow?
    Above-Ground Pro Series 18'x48" Metal Frame - Approx 6,450 gallons
    Skimmer Filter System (cartridge): SFS1000 w/ F1500C Pump: 120watts/2.0amps/1500g.p.h
    Purchased & Installed: 6/7/12 (week of)

  5. Back To Top    #5
    UnderWaterVanya's Avatar
    Join Date
    Jun 2012
    Location
    Mint Hill, NC
    Posts
    2,589

    Re: First Time with Algae

    You should probably reread the article in Pool School a few times just to be sure you have the process down pat Shocking... then if anything is confusing ask for details.

    However it sounds like you have the basic idea - essentially - all you do is raise the roof on Chlorine levels and scrub and filter and stay on top of it for however long it takes. You'll need your FAS-DPD type test to pass the OCLT (Overnight Chlorine Loss Test). You'll have to monitor and keep raising FC as it drops to keep it high until you pass all three criteria.
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

  6. Back To Top    #6

    In the Industry

    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,083

    Re: First Time with Algae

    That is all I need to do to get rid of algae prob, is add the bleach?
    No, that's just the beginning of multiple bleach additions. read "How to Shock Your Pool" up in Pool School
    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
  •