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Thread: Fighting Algae...

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    Join Date
    Mar 2015
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    Fighting Algae...

    Ok, so I've been spending the past week trying to clear up my green pool. After falling for the pool store antics and reading these posts I've decided to become a TFPer. So now I'm wondering if I'm going about this the right way. I've got a 28000 gallon pool, vinyl liner, sand filter. I shocked it with 25lbs of Power Powder Plus because my calcium was low anyway. It's been almost 24 hours, I've backwashed a couple times and it's shown just a little improvement. Am I just being impatient? Did I add too much chlorine? Should I wait until my chlorine levels drop before adding more? My current readings are:

    FC: 6+
    TC: 6+
    ph: 7.0
    TA: 70
    CyA: 70
    CH: 130

    Also, with the Taylor test kit, how do you tell if FC/TC is above 6? The color match only goes up to 6ppm so basically, is there no way to tell if there a difference between say 10ppm and 40ppm? Thanks in advance for any help!!
    28000 gallons; in-ground, vinyl, sand filter

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
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    Re: Fighting Algae...

    Welcome to TFP!

    Sounds like you have the wrong test kit. You need the FAS-DPD chlorine test and tio follow the SLAM process described in Pool School.

    You should also be using liquid chlorine to avoid the side effects of the solid chlorine. The cal hypo can cause cloudiness.

    Also clean the filter when the pressure rises 20-25% over the clean pressure.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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  3. Back To Top    #3
    Divin Dave's Avatar
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    Oct 2013
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    Longview, Texas
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    Re: Fighting Algae...

    Hi,
    Welcome to TFP!
    Yes you are being impatient. It took a while for the algae to grow, and it will take a while for the algae go get gone.

    Now about getting that algae gone.
    You are going to need a the FAS DPD test like jblizzle said. Its the only practical way to measure FC above 5 and its the only way to measure Comibined Chlorine. You can get what you need at www.tftestkits.net I doubt seriously if you will find any in a local store.
    You need the following items
    R-0003
    R-0870
    R-0871
    and the little blue spoon for dipping the R0870 powder. Look around the TF testkits site and youll find the spoon.

    As a quick FYI, Vinyl Pools dont require any specific CH level and long as it not way high. CH is important for plaster though.
    http://www.troublefreepool.com/conte...ater-chemistry

    Here is some info that you will need to be familiar with in order to clear the pool of algae and then to maintain the pool so it doesnt come back.
    How to SLAM ( get rid of algae) http://www.troublefreepool.com/conte...tain-shockingl
    Knowing what the chlorine level should be. http://www.troublefreepool.com/conte...art-slam-shock
    Recommended levels http://www.troublefreepool.com/conte...mmended-levels

    Use Pool Math to know how much of which chemical to add in order to obtain your recommended level, or shock level for FC. http://www.troublefreepool.com/calc.html

    Quote Originally Posted by mooty22 View Post
    Ok, so I've been spending the past week trying to clear up my green pool. After falling for the pool store antics and reading these posts I've decided to become a TFPer. So now I'm wondering if I'm going about this the right way. I've got a 28000 gallon pool, vinyl liner, sand filter. I shocked it with 25lbs of Power Powder Plus because my calcium was low anyway. It's been almost 24 hours, I've backwashed a couple times and it's shown just a little improvement. Am I just being impatient? Did I add too much chlorine? Should I wait until my chlorine levels drop before adding more? My current readings are:

    FC: 6+
    TC: 6+
    ph: 7.0
    TA: 70
    CyA: 70
    CH: 130

    Also, with the Taylor test kit, how do you tell if FC/TC is above 6? The color match only goes up to 6ppm so basically, is there no way to tell if there a difference between say 10ppm and 40ppm? Thanks in advance for any help!!
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
    www.tftestkits.net Experience- it's what's learned just after you needed it most !!

  4. Back To Top    #4
    Patrick_B's Avatar
    Join Date
    Jun 2011
    Location
    Midland TX
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    15,001

    Re: Fighting Algae...

    mooty, welcome to TFP!!

    Sounds like this will come pretty easy for you with a little POP (Pool Owner Patience)

    Enjoy the forums.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

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