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Thread: Got my test kit...here are the results :)

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    Got my test kit...here are the results :)

    CYA= 0 (I have a slow leak....all summer been refilling the pool! Bad I know, just haven't gotten around to actually finding it)
    FC= 3.5
    CC= 0
    TA= 80
    CH= 100

    So I know I need to raise the CYA...my dilemma has been an algae problem. Once I came here to TFP, I switched to the BBB method. Just didn't have the right test kit so I was really guesstimating alot. I SLAMMED the pool, to the best of my ability for the past 4 days. Pool looks great and here I am now.

    Really don't want to SLAM again...even though I may not have been exactly at shock level the entire time...the filter has been running since sunday!

    So...is it safe now to do the overnight occult test? Can I add CYA and do this all tonight...7:30P EST?

    Thanks so much...this site is awesome!
    21' round 52" high AG pool with a 19" sand filter 1hp pump

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    Mod Squad jblizzle's Avatar
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    Re: Got my test kit...here are the results :)

    Welcome to TFP!!!

    The CYA level will not impact the OCLT.
    But with no CYA in the water, you will be losing the FC to the sun very quickly.

    You should certainly do the OCLT to determine if you completed the SLAM process. And you should certainly get at least 30ppm of CYA in the water to protect the FC from the sun.
    Jason, TFP Moderator
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    Re: Got my test kit...here are the results :)

    sounds good...Thanks! I will do the OCLT test tonight and keep the fingers crossed that I pass!!! THANK YOU))
    21' round 52" high AG pool with a 19" sand filter 1hp pump

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    Mod Squad jblizzle's Avatar
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    Re: Got my test kit...here are the results :)

    Usually the OCLT is done at SLAM level based on your CYA, but since you do not have any CYA, you should not raise the FC very high. Starting at < 5ppm for the FC, I would hope you would not lose more than 0.5ppm FC overnight.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Got my test kit...here are the results :)

    So my OCLT showed I lost 0.5. FC is now at 3. Water still looks fantastic....Suggestions?
    21' round 52" high AG pool with a 19" sand filter 1hp pump

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    Re: Got my test kit...here are the results :)

    I'm thinking per the pool calculator, that I need to add 145oz bleach. this will raise my FC to 10 (per my CYA of 0 )


    Also, I am going to add the CYA today...can someone post the link on how to do this, I cant seem to find it. I remember something with a sock

    One thing is confusing me though...If I have a CYA of 0 my FC will drop quicker during the day, correct? Why does it seem then like when you have a higher CYA you add more chlorine. Wouldn't you want to add more with less CYA to cover your excessive loss? I think I must be missing something, lol.

    Thanks everyone
    21' round 52" high AG pool with a 19" sand filter 1hp pump

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    Smykowski's Avatar
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    Re: Got my test kit...here are the results :)

    Quote Originally Posted by mjminto
    I'm thinking per the pool calculator, that I need to add 145oz bleach. this will raise my FC to 10 (per my CYA of 0 )


    Also, I am going to add the CYA today...can someone post the link on how to do this, I cant seem to find it. I remember something with a sock

    One thing is confusing me though...If I have a CYA of 0 my FC will drop quicker during the day, correct? Why does it seem then like when you have a higher CYA you add more chlorine. Wouldn't you want to add more with less CYA to cover your excessive loss? I think I must be missing something, lol.

    Thanks everyone
    Add the CYA first. SLAMing with a CYA of 0 will be very hard to do, because you're walking a thin line between SLAMing and doing damage to the pool.

    Add enough CYA to bring you up to 30. Put granular CYA in an old athletic sock or nylon stocking, and hang it in front of a return. Give it a good squeeze as often as you can and it will dissolve fast. CYA will take awhile to show up on the test, so don't bother, just assume it's in there as soon as you put it in there. Adjust your pH to 7.5, then start SLAMing, and use 13 as your FC minimum.

    Stabilizer is a buffer for chlorine. There are plenty of analogies floating around out there, but basically the stabilizer protects chlorine from the sun to keep it from breaking down. By doing this, it renders some of the FC unavailable for cleaning duties. The more CYA in the pool, the more FC must be in the pool in order to get the same "cleaning power." Too little CYA and sunlight breaks down the FC before it can do any work in the pool. Too much CYA, and it's so well protected from the sun, it can't be "released" to kill algae/bacteria/etc.
    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
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    Re: Got my test kit...here are the results :)

    Aaaaha! That makes sense! Im on it!

    Thanks a bunch
    21' round 52" high AG pool with a 19" sand filter 1hp pump

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    Re: Got my test kit...here are the results :)

    So I turned the filter off last night after about 8 hours of running. Test results at that point were:
    FC 10
    CC 0
    CYA 30 (I used the liquid stabilizer I already had)

    This morning these are my results:
    FC 6.5
    CC 2
    TC8.5

    Water still looks great....What do I do? As I mentioned before, filter has been running far too long before this. Really cant afford to keep it going. Can I add my bleach to raise my FC and run the pump for say 6 hours today?
    21' round 52" high AG pool with a 19" sand filter 1hp pump

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    Re: Got my test kit...here are the results :)

    Water still looks great....What do I do?
    Re-read the SLAM process. It will tell you the SLAM is complete when....

    1. Your pool water is sparkling
    2. Your CC's are .5ppm or less
    3. You can hold your FC overnight without losing more than 1ppm.

    You failed two out of the three so the SLAM is not complete.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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  11. Back To Top    #11

    Re: Got my test kit...here are the results :)

    Well I thought I did pass...the night before I did the overnight OCLT test and only lost .5.... I also had 0 cc.

    This is the following day....it is also the first time in a week that I did not let my filter run for an entire 24 hours. I really should not have to run my filter that much....right.?!
    21' round 52" high AG pool with a 19" sand filter 1hp pump

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    Smykowski's Avatar
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    Re: Got my test kit...here are the results :)

    Quote Originally Posted by mjminto
    I really should not have to run my filter that much....right.?!
    Once it's clean you won't have to run the filter that much. However, you have something in the pool consuming your FC, so all bets are off.
    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

  13. Back To Top    #13

    Re: Got my test kit...here are the results :)

    So back to slamming???? Again??? Sigh....
    21' round 52" high AG pool with a 19" sand filter 1hp pump

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