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Thread: First chemical test does not look good

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    First chemical test does not look good

    I just got my kit, tested for the first time and my number seem pretty bad

    CL 1.2
    CC .02
    PH 7.0
    TA 30
    CH 600
    CYA 90

    Pool Math is telling me I need to replace 56% of my water. I have a pool company maintaining this. I expected needing some adjustment but this seems extreme. I ran all the tests twice just to be sure. Pool is clear and no algae.
    Tom,
    22k IG plaster pool, Haywood DE6020 Pro Grid DE filer
    Century Centurion 2 HP single speed with Challenger Pentair front housing replacement. Polaris 280 and Polaris PB4-60 pump. Stenner Injection
    Pool is probably 1980-1990 vintage. Concrete deck

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    Mod Squad jblizzle's Avatar
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    Re: First chemical test does not look good

    Pool service companies do not follow our recommendations. They try to only visit once a week and thus maintain the chemistry different. Are you planning on taking over?

    Certainly the pH and TA are too low and CYA is too high (are they using tablets?). The CH is also getting up there, are they using cal hypo granular chlorine?

    If you are taking over, we can get you straightened out, but mixing our advice with their service is not going to work.
    Jason, TFP Moderator
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    Re: First chemical test does not look good

    I am taking over. I was planing to finish out the month that I paid for of service and then go on my own. I was hoping the pool chemistry would be in better shape when I took over though. They are scheduled to come out today. Should I try to get them to straighten it out or just have them clean and not touch the chemistry?

    I have no idea what chemicals they are using. I can ask today.
    Tom,
    22k IG plaster pool, Haywood DE6020 Pro Grid DE filer
    Century Centurion 2 HP single speed with Challenger Pentair front housing replacement. Polaris 280 and Polaris PB4-60 pump. Stenner Injection
    Pool is probably 1980-1990 vintage. Concrete deck

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    Mod Squad jblizzle's Avatar
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    Re: First chemical test does not look good

    I would ask them to do a full set of tests and have them at least correct the pH and TA (and low FC) and find out what they have been using.

    Likely you are going to want to replace 50% of the water to get the CYA in line and to reduce the CH some.
    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: First chemical test does not look good

    I watched him do the tests and he got about the same numbers as me except for the TA which his test showed 60 where mine was 30. He said the CYA was high but it would be fine because he wouldn't put tabs in. He couldn't test the CH. He didn't speak very good English so I kinda gave up trying to communicate with him since I'm going to be doing it myself from now on anyway. So now to drain the pool I guess. Should I do that right away or can it wait for the weather to warm up a bit?
    Tom,
    22k IG plaster pool, Haywood DE6020 Pro Grid DE filer
    Century Centurion 2 HP single speed with Challenger Pentair front housing replacement. Polaris 280 and Polaris PB4-60 pump. Stenner Injection
    Pool is probably 1980-1990 vintage. Concrete deck

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    Mod Squad jblizzle's Avatar
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    Re: First chemical test does not look good

    By not adding tablets all that does is make sure the CYA does not rise more. It is going to stay high until you replace water.

    Did they raise the pH at least?

    Up to you when you want to replace the water, less chance of algae when the water is colder. Until then you need to be maintaining a FC level of at LEAST 7ppm due to the high CYA to prevent algae from starting. See the FC/CYA Chart.
    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: First chemical test does not look good

    I rented a pump and drained half the water yesterday. I just finished refilling and turned the pumps and cleaner on this morning. I was planning to let that run for about an hour and then do a full set of tests. With all the new water do I need to SLAM the pool or do I just try to get it to the recommended levels?
    Tom,
    22k IG plaster pool, Haywood DE6020 Pro Grid DE filer
    Century Centurion 2 HP single speed with Challenger Pentair front housing replacement. Polaris 280 and Polaris PB4-60 pump. Stenner Injection
    Pool is probably 1980-1990 vintage. Concrete deck

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    pwrstrk's Avatar
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    First chemical test does not look good

    No need to SLAM. Test your levels and get them in range. Make sure to get your FC level correct for your CYA level.

    Also make sure your PH is in range.
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Re: First chemical test does not look good

    Just did the tests:
    FC = 0.6
    CC = 0.2
    PH = 7.2
    TA = 30
    CH = 340
    CYA = 50

    Are these CH and CYA numbers acceptable? I just changed half my water but Pool Math is still telling me to change 20%.
    Tom,
    22k IG plaster pool, Haywood DE6020 Pro Grid DE filer
    Century Centurion 2 HP single speed with Challenger Pentair front housing replacement. Polaris 280 and Polaris PB4-60 pump. Stenner Injection
    Pool is probably 1980-1990 vintage. Concrete deck

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    Mod Squad jblizzle's Avatar
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    Re: First chemical test does not look good

    PoolMath will tell you what to do to achieve whatever numbers you enter as the target. You must have entered a lower CH or CYA as the target.

    Those look fine to me other than the FC being too low and the TA a little low. You can use a 10ml water sample fit the FAS-DPD test to save reagent so reach drop is 0.5ppm.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    Re: First chemical test does not look good

    Getting my supplies. 22 pounds of baking soda :-O

    Casher at the grocery must have thought I was nuts.


    Tom,
    22k IG plaster pool, Haywood DE6020 Pro Grid DE filer
    Century Centurion 2 HP single speed with Challenger Pentair front housing replacement. Polaris 280 and Polaris PB4-60 pump. Stenner Injection
    Pool is probably 1980-1990 vintage. Concrete deck

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    Re: First chemical test does not look good

    Maybe it was the Tony's that threw her off.

    I use that stuff a lot too. A bit salty, but it's good stuff!
    TFP Moderator
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    Re: First chemical test does not look good

    Quote Originally Posted by Brushpup View Post
    Maybe it was the Tony's that threw her off.

    I use that stuff a lot too. A bit salty, but it's good stuff!
    I like my pool spicy! Also that's the Tony's More Spice. Has a lot less salt.
    Tom,
    22k IG plaster pool, Haywood DE6020 Pro Grid DE filer
    Century Centurion 2 HP single speed with Challenger Pentair front housing replacement. Polaris 280 and Polaris PB4-60 pump. Stenner Injection
    Pool is probably 1980-1990 vintage. Concrete deck

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    Re: First chemical test does not look good

    Quote Originally Posted by pharpe View Post
    I like my pool spicy! Also that's the Tony's More Spice. Has a lot less salt.
    Really?I have not seen that, but will be trying it out for sure. Thanks for mentioning it.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
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    Mod Squad jblizzle's Avatar
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    Re: First chemical test does not look good

    You may never need that borax in the pool. But no harm having it on hand. What are you planning to target for TA? I would raise it to about 60-70ppm and see how the pH behaves.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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    pwrstrk's Avatar
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    Re: First chemical test does not look good

    Yep I think the 60-70 ppm range for the TA is a good place to start.
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Re: First chemical test does not look good

    Quote Originally Posted by jblizzle View Post
    You may never need that borax in the pool. But no harm having it on hand.
    Pool Math said I needed 30 oz or Borax to get to 7.5 PH but I was going to hold off putting that in until I got my TA up.

    Quote Originally Posted by jblizzle View Post
    What are you planning to target for TA? I would raise it to about 60-70ppm and see how the pH behaves.
    Quote Originally Posted by pwrstrk View Post
    Yep I think the 60-70 ppm range for the TA is a good place to start.
    I was going to target 100 TA but I'll change that target to 60-70 on your recommendations.

    I have to leave town tomorrow morning so I was planning to have the wife put in half a gallon of bleach a day until I get back Thursday. I have no idea what my pool consumes since I'm just getting started. Does that sound like a reasonable number to start with? I have a Stenner pump on order.
    Tom,
    22k IG plaster pool, Haywood DE6020 Pro Grid DE filer
    Century Centurion 2 HP single speed with Challenger Pentair front housing replacement. Polaris 280 and Polaris PB4-60 pump. Stenner Injection
    Pool is probably 1980-1990 vintage. Concrete deck

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    pwrstrk's Avatar
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    First chemical test does not look good

    I wouldn't do anything with the PH. PH usually increases on its own.

    Go ahead and get your TA up to 60-70 ppm. Then you can see what your PH does over time.

    I don't know how much FC your pool consumes either. 2 quarts a day should be good this time of the year. You'll have to test it and keep it in range for your CYA level. Can you show your wife how to do a quick test ? What is your pool water temp and is it covered or not ?
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Re: First chemical test does not look good

    I've got everything added. My tree company came and trimmed the trees and got tons of branches and saw dust in the pool. Hope that doesn't mess up my chemistry



    Tom,
    22k IG plaster pool, Haywood DE6020 Pro Grid DE filer
    Century Centurion 2 HP single speed with Challenger Pentair front housing replacement. Polaris 280 and Polaris PB4-60 pump. Stenner Injection
    Pool is probably 1980-1990 vintage. Concrete deck

  20. Back To Top    #20
    pwrstrk's Avatar
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    Re: First chemical test does not look good

    Hmmm. I would get that cleaned out ASAP, if you already haven't. That stuff would consume some FC if left in there.
    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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