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Thread: Water test results and questions

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    Water test results and questions

    Finally got a decent test kit (k2006), and here are my first set of results:
    FC - 14.8
    CC - 1.2
    pH - 7.3
    TA - 140
    CYA - 60

    The pH and TA agree with my previous kit (Pentair), and the CYA agrees with the pool store results. The chlorine is the main thing I've been worried about. Doing overnight test tonight. Brought pool up to 18 fc per the pool calculator for shock level. My water originally had a brown/yellowish tint and the pool store said I had iron present. I added metal magic and it cleared up perfectly one day, now it has a slight greenish tint, but no other evidence of algae. Until I have other suspicions, my plan is to shock until it clears the 3 hurdles. Any other thoughts?
    Intex Easy Set 18'x48" vinyl AG
    5,455 gallons
    Intex pump
    Cartridge filter, Type A

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    Re: Water test results and questions

    You aren't shocking yet. Shock value for a CYA of 60 is 24ppm. You need more chlorine to get to 24 and then you need more chlorine to HOLD it at 24 until your pool clears.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Water test results and questions

    Ok now I'm confused. The Pool Calculator said my shock level was 18, 34 for mustard algae. This was after I put in 60 for my cya level. The chlorine/cya chart says 24. I'll go with the chart, assuming I'm not doing something correctly with the Calculator.
    Intex Easy Set 18'x48" vinyl AG
    5,455 gallons
    Intex pump
    Cartridge filter, Type A

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    duraleigh's Avatar
    Join Date
    Apr 2007
    Location
    Sebring, Florida
    Posts
    30,077

    Re: Water test results and questions

    They do differ. I use the chart up in Pool School because I have a printout taped to my screen for easy reference. The point is, keep your chlorine up by replenishing it often. We'll help you get a crystal clear pool.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Water test results and questions

    Ok, had to go get more bleach. Checked the water at 1:00 and FC was 19.6, CC was 1. Added 50 oz. bleach per Pool Calculator to bring FC level to 24 as the chart says. I'll have to wait until 4:30 check it again (when I get off work). I'm going to try and post some links to a couple of pics below of the pool. If this works, the first one hopefully gives an idea of the slight greenish tint to the water.

    The second picture is something I noticed last night. As I stated in my original post, I had an iron problem when I filled the pool. Could that be what has caused the line on the ladder leg? Hopefully you can see it (sorry for the shadow, didn't noticed until after I got to work to attach this pic). Could the rust that you see on my ladder add enough iron to cause more problems? I plan to clean it up and repaint it at some point, but I thought about waiting until after the season (which won't be until late August/mid-Septemberish).

    https://www.dropbox.com/s/utv13813q1...ool%20May%2022

    https://www.dropbox.com/s/2kebwhvfe3adsf7/Ladder
    Intex Easy Set 18'x48" vinyl AG
    5,455 gallons
    Intex pump
    Cartridge filter, Type A

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