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Thread: First test results

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    First test results

    I just got my k-2006 test and these are the results I got. My pool is cloudy, I can see the bottom of the shallow end but not in the deep. We just moved into this house two weeks ago and the pool was green when I started. I didn't know better and went to the pool store recommended by the previous owners. So far everything the store has had me try has not worked so I decided to do some searching online myself and ended up here.

    CYA 30 I am not really sure about this, I could still see the black dot at the bottom of the tub but it was full so I am guessing this is the lowest reading the test allows

    Ph 7.8
    FC .4
    CC .6
    TA 110
    25k gallon IG Vinyl
    Hayward sand filter

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    Re: First test results

    Assume your CYA is zero. Buy enough to get it to 30 ppm. Put it in right away.

    read "The ABC's of Pool Water Chemistry" up in Pool School, then read "How to Shock Your Pool" .

    Lower your pH down to around 7.2

    Start the shock process using only bleach. The shock process is rather involved so follow that article explicity and ask questions rather than guess or assume something.

    It may take a few more days, but your pool will clear.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: First test results

    Where can I buy CYA?

    Quote Originally Posted by duraleigh
    Assume your CYA is zero. Buy enough to get it to 30 ppm. Put it in right away.

    read "The ABC's of Pool Water Chemistry" up in Pool School, then read "How to Shock Your Pool" .

    Lower your pH down to around 7.2

    Start the shock process using only bleach. The shock process is rather involved so follow that article explicity and ask questions rather than guess or assume something.

    It may take a few more days, but your pool will clear.
    25k gallon IG Vinyl
    Hayward sand filter

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    Re: First test results

    HD, Lowes, Kmart, walmart
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: First test results

    You need to follow the shock process, pool-school/shocking_your_pool.

    Is the CYA test tube cloudy at all or is it clear when filled to the top. If it is cloudy, consider your CYA to be around 20, if it is nice and clear you have zero CYA. It is best to have the CYA between 20-30 to start. If you need to add CYA, put it in a sock and suspend it over a return. If you add it to the skimmer it will get backwashed out before it dissolves.

    Start off by lowering the pH to 7.2 and then start adding liquid chlorine. Your target FC level will be in the link above and keep it there as long as possible. You will be finished with the shock process when the pool passes three criteria: water is clear, CC is .5 or less, and the pool passes the OCLT pool-school/overnight_fc_test.

    To save on reagents for testing FC, use 10 ml of water for the FAS-DPD test and count each drop as .5 ppm.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
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    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

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    Re: First test results

    When filled to the top the tube is a little cloudy, it is not clear so should I add some CYA or just start the shock process? Also, to lower the pH I add the muriatic acid but how much? I am guessing that is where the pool calculator comes in and I have looked at it a couple times but it is really confusing me.

    Quote Originally Posted by ping
    You need to follow the shock process, pool-school/shocking_your_pool.

    Is the CYA test tube cloudy at all or is it clear when filled to the top. If it is cloudy, consider your CYA to be around 20, if it is nice and clear you have zero CYA. It is best to have the CYA between 20-30 to start. If you need to add CYA, put it in a sock and suspend it over a return. If you add it to the skimmer it will get backwashed out before it dissolves.

    Start off by lowering the pH to 7.2 and then start adding liquid chlorine. Your target FC level will be in the link above and keep it there as long as possible. You will be finished with the shock process when the pool passes three criteria: water is clear, CC is .5 or less, and the pool passes the OCLT pool-school/overnight_fc_test.

    To save on reagents for testing FC, use 10 ml of water for the FAS-DPD test and count each drop as .5 ppm.
    25k gallon IG Vinyl
    Hayward sand filter

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    Re: First test results

    You can start the shock process now and add enough CYA in a sock to raise it by 15 ppm which should be 50 oz.

    According to the pool calculator you should be needing 108 oz of full strength MA. To get this number, make sure you enter 25,000 in the size of your pool at the top of the calculator page. Enter 7.8 on the left side of the pH which is the now amount and enter 7.2 to the right of it for your target or goal amount. Looking to the right of that it has your options for the different types and strength of acid to use and it calculates how much you need.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
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    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

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    Re: First test results

    Ok, I did a little shopping and just want to double check before I start putting stuff into my pool.

    I picked up some muriatic acide from Lowes and with the pool calculator and the % I got off the bottle it says I should add 68 oz to drop my pH from 7.8 to 7.2. Is this the right stuff?
    http://www.lowes.com/pd_206474-34228-CR ... facetInfo=

    I went to Walmart and found Stabilizer that says the active ingredient is CYA and again with the calculator I need 50 oz. to go from a 20 to a 35 which I think is the whole bottle. I put this in a sock and hang it in front of the returns?
    25k gallon IG Vinyl
    Hayward sand filter

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    Re: First test results

    You could probably stick all of CYA in one sock, but I would put half in one sock now, and wait until that all disolves, then put the remainder in at that time. Glad you figured out that CYA equals stabilizer......

    Bob E.

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    Re: First test results

    Do I just pour the muriatic acid straight into the pool?

    Last question for the night......I have a chlorinator by the filter that has 3" tablets in it, do I take these out now?
    25k gallon IG Vinyl
    Hayward sand filter

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    Re: First test results

    It is easiest for me to pour it slowly straight from the jug into the pool over a return with the pump running. Some people like to mix it in a bucket of water first then pour it over the return. The bucket can then be filled with water from the pool and dumped into the pool to kind of help distribute the acid some more. That step is not needed, but I have used it myself in the past and it doesn't hurt anything. It also washes out the bucket. Measure the pH about half an hour later to see what it reads and if it needs more adjustment you can go ahead and add more acid.

    Your calculations are correct for the amount of acid to add and that is the full strength acid. I messed up earlier by having borates in the calculator which would require more acid than what you need.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

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    Re: First test results

    Be careful with tablets because they contain cya too so you could over do it so I would stick with bleach and the stabilizer. It will be easier to figure out your cya if you use stabilizer.

    24'x54'' AG
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    Re: First test results

    I started the CYA last night and then tested pH this morning and the CYA dropped it down to 7.2 so I didn't add the muriatic acid. I did my first round to shock and now how long do I wait before I test FC again?
    25k gallon IG Vinyl
    Hayward sand filter

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    Re: First test results

    Wait an hour and test only FC and CC. Redose to shock level, and repeat.
    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: First test results

    Ok, so I tested after about hour and 45 min. and I am at 5.5 for FC so I need to shock again.

    Can I vacuum during this process? I can see spots where "stuff" is sitting on the bottom of the pool in the shallow end.
    25k gallon IG Vinyl
    Hayward sand filter

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    Re: First test results

    Yes, you can vacuum during this process. Make sure you are brushing everyday also.

    It is best to raise the FC to shock level as often as you can. Hourly adjustments are best if you can manage. At the start of the shock process, the FC will be consumed the fastest and will need to be replenished often. Once the chlorine gets ahead of the algae you wont have to test or adjust as often. At the beginning you need to constantly hit the algae hard to win this battle. The more time you stay at shock level, the faster the water will clear.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
    Hayward Aqua Rite T-15 SWCG, Jandy LXi 400k BTU NG heater, 350 sq.ft. of Sun Star solar panels, TF-100 Test Kit, Dolphin s300i Cleaner
    Test Kits . Pool Math . Chlorine/CYA Chart . The SLAM Process

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    Re: First test results

    Quote Originally Posted by ping
    Yes, you can vacuum during this process. Make sure you are brushing everyday also.

    It is best to raise the FC to shock level as often as you can. Hourly adjustments are best if you can manage. At the start of the shock process, the FC will be consumed the fastest and will need to be replenished often. Once the chlorine gets ahead of the algae you wont have to test or adjust as often. At the beginning you need to constantly hit the algae hard to win this battle. The more time you stay at shock level, the faster the water will clear.
    Ok thanks. I will check more often, had to run out to the store (under estimated the amount of bleach I would need) and fix lunch for the kids so it went a little longer.

    Vacuumed what I could see and then brushed the whole pool. FC had only dropped to 10.5 from goal of 12 so just had to add a little more bleach. The pool really didn't get much cloudier than it already was when I brushed the bottom of the deep end that I can't see. When I did this last week it turned the whole pool almost back to green.
    25k gallon IG Vinyl
    Hayward sand filter

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