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Thread: Need advice on what chemicals to add to get it cleared up.

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    Need advice on what chemicals to add to get it cleared up.

    Just trying to get it cleared up from last winter. We let it go thinking we were going to replace the liner. Was green before now is just cloudy.

    Pool is 16x40 IG vinyl liner with a SWG and its at 3100ppm. The pool has a right angle and pool depth goes from 3' 6" shallow end to 8 ft on the deep end. My guess is 31000 gallons?
    I just added 3 gallons of bleach yesterday and pump has run 8 hours yesterday and couple hours today.

    I am using the tf-100 kit to test the levels

    Basic chlorine is too high and off the chart it is past 5 and the ph is off chart and is too low it is lower than 6.8.
    Other Current numbers are:
    FC is 1.2
    CC is 1
    TC is 2.2
    TA is 20
    CH is 30
    CYA is 15 or less I could still see dot with all solution used.


    Any suggestions on where do I go from here on what to add in what order?


    Thanks
    16' x 40' inground Vinyl liner pool. Has a depth APX of 3 1/2' to 8'. Pool also has a right angle APX 4'10' on shallow end. in Southern Alabama. It is not covered with sun on it most the day. SWG. Apx 31k Gallons, Sand filter with 1 HP Pump. Don't know the flow rate.

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    Mod Squad JohnT's Avatar
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    Re: Need advice on what chemicals to add to get it cleared u

    Quote Originally Posted by michaelrj9
    I am using the tf-100 kit to test the levels

    Basic chlorine is too high and off the chart it is past 5 and the ph is off chart and is too low it is lower than 6.8.
    Other Current numbers are:
    FC is 1.2
    CC is 1
    TC is 2.2

    The TF-100 can test chlorine to 50ppm. If your FC is 1.2 and CC is 1, your chlorine is too low, not too high.
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    Re: Need advice on what chemicals to add to get it cleared u

    Quote Originally Posted by michaelrj9
    Basic chlorine is too high and off the chart it is past 5 and the ph is off chart and is too low it is lower than 6.8.
    Other Current numbers are:
    FC is 1.2
    CC is 1
    TC is 2.2
    I'm a bit confused as to how the chlorine is "past 5" and "off the chart", given the FC, CC, and TC results posted. If you are using the TF-100 kit, it sounds like you may have used the OTO chlorine test. I would test again using the FAS-DPD test which is the one that uses the powder. Instructions for running that test are included in the kit.

    If you pH is at 6.8 or less, you need to bring that up to at least 7.2 ASAP.
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    Re: Need advice on what chemicals to add to get it cleared u

    Quote Originally Posted by BoDarville
    Quote Originally Posted by michaelrj9
    Basic chlorine is too high and off the chart it is past 5 and the ph is off chart and is too low it is lower than 6.8.
    Other Current numbers are:
    FC is 1.2
    CC is 1
    TC is 2.2
    I'm a bit confused as to how the chlorine is "past 5" and "off the chart", given the FC, CC, and TC results posted. If you are using the TF-100 kit, it sounds like you may have used the OTO chlorine test. I would test again using the FAS-DPD test which is the one that uses the powder. Instructions for running that test are included in the kit.

    If you pH is at 6.8 or less, you need to bring that up to at least 7.2 ASAP.

    Those numbers FC CC and TC are from using the Tf-100 kit the "basic" CL and Ph I posted 5 for the CL and 6.8 for the ph were using the basic daily ph and CL test kit. Mine is model k1000 from Taylor


    So what should I add.

    Thanks for all your help
    16' x 40' inground Vinyl liner pool. Has a depth APX of 3 1/2' to 8'. Pool also has a right angle APX 4'10' on shallow end. in Southern Alabama. It is not covered with sun on it most the day. SWG. Apx 31k Gallons, Sand filter with 1 HP Pump. Don't know the flow rate.

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    Re: Need advice on what chemicals to add to get it cleared u

    I used this tester in the pic and it showed it is past 5 for the chlorine and the ph was lower than 6.8.

    These Results below are from the TF test kit:
    FC is 1.2
    CC is 1
    TC is 2.2
    TA is 20
    CH is 30
    CYA is 15 (or less I could still see dot with all solution used.)

    If I use the calculator and use the default TARGET settings it says need to add about 180oz of bleach to raise FC from 1.2 to 4
    108oz of borax (could be more as it shows less than 6.8) to change from 6.8 to 7.5
    582oz of baking soda to change TA from 20 to 100
    103oz of stabilizer or 268oz of liquid stabilizer to change CYA from 15 to 40
    (What's better?)

    Should I put all of this in at once or a certain order?
    I know certain stuff will change the levels of other stuff (like the ph) and don't want to make it worse that it already is.

    Any help on what I should put in (and any particular order) and how much will be greatly appreciated.

    Thanks
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    16' x 40' inground Vinyl liner pool. Has a depth APX of 3 1/2' to 8'. Pool also has a right angle APX 4'10' on shallow end. in Southern Alabama. It is not covered with sun on it most the day. SWG. Apx 31k Gallons, Sand filter with 1 HP Pump. Don't know the flow rate.

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    Re: Need advice on what chemicals to add to get it cleared u

    How does your water look? You need to raise CYA a little and shock to get rid of the CC and green per directions in pool school.

    So raise PH.
    Add CYA in sock hanging in front of return.
    Then calculate your shock level and start that process.
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    Re: Need advice on what chemicals to add to get it cleared u

    Also it would be nice to see a picture of your pool and know what type of sun you get, do you cover it regularly etc to suggest a CYA target.
    18'x43' Sport Pool
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    Re: Need advice on what chemicals to add to get it cleared u

    What color was the OTO test ( the chlorine test in your picture)? Was it still yellow?

    Something still seems not right here, on the FC and CC test I think, but lets deal with that later.

    First with your TA as low as it is (you did mean 20 not 200), you need to raise that with baking soda to at least 50 ppm. (don't go to 100, you will still go up from 50 as you adjust ph next).

    Next you need to raise ph with borax up to at least 7.2. Since you are reading 6.8, you might be much lower than that. Calculate how much [s:3sj7bfqi]Muriatic Acid[/s:3sj7bfqi]Borax you need to go from 6.8 to 7.5, then add it, then test again in 1 hour (with pump running). Then repeat this process until your ph is at least 7.2. At that point retest your TA.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Re: Need advice on what chemicals to add to get it cleared u

    I think linen meant to type calculate how much borax you need vs muratic acid....
    18'x43' Sport Pool
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    Re: Need advice on what chemicals to add to get it cleared u

    Quote Originally Posted by harleysilo
    I think linen meant to type calculate how much borax you need vs muratic acid....
    Thanks harleysilo ...yep meant borax
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Re: Need advice on what chemicals to add to get it cleared u

    How does your water look? You need to raise CYA a little and shock to get rid of the CC and green per directions in pool school.
    Water is cloudy not really green anymore it is a slight bluish tint. (it was green before adding bleach a week or so ago and cleanings)
    The shallow end I can see the bottom and can see if dirt if it was on the ground (but water is not clear) the deep end is cloudy and can barley make out where the main drain is at the bottom but barley can see the outline of it.

    Here are some pics not sure if you can see too much because of the sun but...

    The pool is never covered gets Southern Alabama sun most of the day.
    What color was the OTO test ( the chlorine test in your picture)? Was it still yellow?
    It was darker yellow than the 5 on the tester my guess is if the tester would go higher it would of been in the 6-7 range.

    The TA was 20 (benefit of the doubt) I only needed 1 drop to turn red 2 drops made it a little darker red (it wouldn't get any more red with more props) I tried it. so I took 2x10 to get 20
    Attached Images Attached Images
    16' x 40' inground Vinyl liner pool. Has a depth APX of 3 1/2' to 8'. Pool also has a right angle APX 4'10' on shallow end. in Southern Alabama. It is not covered with sun on it most the day. SWG. Apx 31k Gallons, Sand filter with 1 HP Pump. Don't know the flow rate.

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    Mod Squad jblizzle's Avatar
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    Re: Need advice on what chemicals to add to get it cleared u

    Yup. raise that TA and pH up. And then figure out what is going wrong with the FAS-DPD test.
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    Re: Need advice on what chemicals to add to get it cleared u

    Quote Originally Posted by michaelrj9
    Basic chlorine is too high and off the chart it is past 5 and the ph is off chart and is too low it is lower than 6.8.
    Other Current numbers are:
    FC is 1.2
    CC is 1
    TC is 2.2
    Quote Originally Posted by BoDarville
    I'm a bit confused as to how the chlorine is "past 5" and "off the chart", given the FC, CC, and TC results posted. If you are using the TF-100 kit, it sounds like you may have used the OTO chlorine test. I would test again using the FAS-DPD test which is the one that uses the powder. Instructions for running that test are included in the kit.
    Quote Originally Posted by michaelrj9
    So what should I add.
    FC+CC=TC. The TC of 2.2 posted above is correctly derived from adding the FC of 1.2 and CC of 1. The confusion arose over how the chlorine could be "past 5". Did you test using both the FAS-DPD (which uses the powder) and OTO tests? The OTO test (tester shown in picture above) is designed to show the presence of chlorine (TC). It would be very difficult to interpolate a CC value using this test. I would go with the results of the FAS-DPD test since that is the more accurate of the two tests.
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    Re: Need advice on what chemicals to add to get it cleared u

    FC+CC=TC. The TC of 2.2 posted above is correctly derived from adding the FC of 1.2 and CC of 1. The confusion arose over how the chlorine could be "past 5". Did you test using both the FAS-DPD (which uses the powder) and OTO tests? The OTO test (tester shown in picture above) is designed to show the presence of chlorine (TC). It would be very difficult to interpolate a CC value using this test. I would go with the results of the FAS-DPD test since that is the more accurate of the two tests.

    Yes the "past 5" was with the OTO test. I also did the FAS-DPD (which uses the powder) which was the 1.2 & 1 numbers.

    'Today I added 12lb of baking soda now the TA is at 40 (from 20 before) and the PH is i'm not sure it is a light orange l(ook at pic) is that around a 7? it's a darker orange than on the chart by the 6.8 but then mine doesn't have a red tint to it either.
    My guess it is a 7.

    So tomorrow I guess I need to add more baking soda to raise the TA and go from there. 4-8lb probably.
    If the PH is close to a 7 how can I raise the TA without the PH going too high?
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    16' x 40' inground Vinyl liner pool. Has a depth APX of 3 1/2' to 8'. Pool also has a right angle APX 4'10' on shallow end. in Southern Alabama. It is not covered with sun on it most the day. SWG. Apx 31k Gallons, Sand filter with 1 HP Pump. Don't know the flow rate.

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    Mod Squad jblizzle's Avatar
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    Re: Need advice on what chemicals to add to get it cleared u

    baking soda does not affect pH very much.
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    Re: Need advice on what chemicals to add to get it cleared u

    Borax raises pH with a minimal effect on TA.

    Baking soda raises TA with a minimal effect on pH.
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