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Thread: SLAM-ing now---- can't get a good read??? Added over 100 drops!!!

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    Join Date
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    SLAM-ing now---- can't get a good read??? Added over 100 drops!!!

    I just tried to re-test my FC and CC with Taylor Kit K-2006...
    Tested at 12pm and FC was 6.2 and CC was .2.

    Just tried testing at 3:45pm and it isnt working... I have added over 100 drops of R-0871 and it is still pink!!!!

    HELP!

    Don't even know my CYA bc the pool was too murky to get a good reading.



    Frustrated.

    How often should I be testing when SLAM-ing?


    Attachment 33396
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    22,000 gallon pool---In ground--Oval--16x32---Vinyl liner -----Cartridge Pentair filter
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    JasonLion's Avatar
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    Re: SLAM-ing now---- can't get a good read??? Added over 100 drops!!!

    Welcome to TFP!

    The test is only reliable up to about 100 drops. Because you are measuring by steps of 0.2, that means an upper limit on the test of 20, which isn't really all that high. You should use a 10 ml sample, so you are measuring by steps of 0.5, which allows the test to measure FC levels up to 50. There really isn't any use for the 0.2 steps, the added precision isn't really useful and it uses up reagents much more quickly.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: SLAM-ing now---- can't get a good read??? Added over 100 drops!!!

    Don't even know my CYA bc the pool was too murky to get a good reading.
    Usually not. What does the CYA view tube tell you if you simply put in pool water? (do not add R-0013). It will very likely be 0 CYA

    How much chlorine did y9ou add between 12:00 and 2:45PM?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: SLAM-ing now---- can't get a good read??? Added over 100 drops!!!

    JasonLion--THANK YOU! Followed your advice and it took 58 drops.

    FC is now 29-pool math told me I want to shock at 28. It said 38 for mustard algae shock, but I am nervous to ruin my liner?

    Which should I do?

    Added 7.5 gallons at 10.5% around 12pm.

    - - - Updated - - -

    PS- When my husband ran to the store to get more chlorine he had them test the water just to see what it would say and they said FC was 5.0!!! This was 1 hour before we tested with the FAS-DPD and got FC 29.

    Trying not to be mad about all the pool store advice we've gotten these last 6 mos!
    ________________________
    22,000 gallon pool---In ground--Oval--16x32---Vinyl liner -----Cartridge Pentair filter
    Pump= Century HSQ 165 (installed 2016) ---New liner in 2014 when we bought, orig. build date unknown
    Test kit Taylor K-2006---Manual vacuum---Bottom drain not in use, odd plumbing setup

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    Smykowski's Avatar
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    Re: SLAM-ing now---- can't get a good read??? Added over 100 drops!!!

    Use the "regular" SLAM number. Damage to the liner occurs with high FC and no CYA, or from prolonged exposure to low pH water. If you use the TFP values, you'll be fine.
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

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    Re: SLAM-ing now---- can't get a good read??? Added over 100 drops!!!

    I am confused. Have you determined your CYA and I am not seeing it posted?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: SLAM-ing now---- can't get a good read??? Added over 100 drops!!!

    The poster (in another thread) measured CYA of 70, using K-2006. She was still getting used to doing the CYA test, and not 100% confident of the result, I think.
    18' x 48" ring top pool (Summer Escapes); 5500 gallons; set up June - October, stored during winter; Intex 2500 gph pump (B size cartridge filter) Hayward 21" sand filter + 1.5 hp single speed Powerflo Matrix pump (upgrade October 2016) *** K-2006 test kit, refills from tftestkits

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    Re: SLAM-ing now---- can't get a good read??? Added over 100 drops!!!

    I see it now, SP, Thanks. It is a good reminder how confusing it gets when OP's run multiple posts.....I was lost.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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