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Thread: Recommend Chemical Levels

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    Recommend Chemical Levels

    I'm trying to determine what the appropriate chemical levels are given my pool configuration.

    The pool is an in-ground pool, located in Mississippi, has a vinyl liner, and receives constant sunlight throughout the day. The current levels are:

    CYA: ~45
    FC: 5.5
    TA: ~125
    PH: 7.2

    I have viewed the recommended levels within the "Pool School" section, but I assume some differences are likely given the all-day sunlight and higher than recommended TA levels.

    Thanks in advance for any recommendations you may have.
    Pear shaped ? x 43', ~30K gallons | Vinyl Liner | ? HP Pentair pump | Hayward Sand Filter | (unused) Rainbow 320 Chlorinator | No automatic cleaner
    Someone once told me: There are two good days when a house has a pool; the day you move in and the day you move out.

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    duraleigh's Avatar
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    Re: Recommend Chemical Levels

    Welcome to the forum.

    You are within the suggested guidelines so you are fine.

    If you like, you could raise CYA up to 50, maybe even 60 but, if it was my pool, I wouldn't do that this late in the year....the CYA will cost more than the chlorine you might save.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Butterfly's Avatar
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    Re: Recommend Chemical Levels

    Welcome to the forum

    I agree w/Dave and would leave the CYA where it is for now.

    As long as you keep the FC between 4 and 8, and never below 4, you should be golden.
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    pwrstrk's Avatar
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    Re: Recommend Chemical Levels

    They almost look like my numbers. The only difference is my TA is 80.

    Good job !!
    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: Recommend Chemical Levels

    This is after an almost complete refill of the pool.

    Over the past month or so, I've been dealing with an algae bloom that simply would not go away. I shocked continuously trying to eliminate it and eventually realized that the shock was adding CYA (along with the chlorine pucks), so I'm now going to try the BBB method espoused here.

    There are currently "strips" of light brownish color that are collecting at the bottom of the pool, which I have previously associated with dead algae. I'm going to begin the SLAMing procedure as documented. Hopefully this will eliminate the issue.

    Thank you all for your input on the appropriate levels.
    Pear shaped ? x 43', ~30K gallons | Vinyl Liner | ? HP Pentair pump | Hayward Sand Filter | (unused) Rainbow 320 Chlorinator | No automatic cleaner
    Someone once told me: There are two good days when a house has a pool; the day you move in and the day you move out.

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    Mod Squad jblizzle's Avatar
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    Re: Recommend Chemical Levels

    Welcome to TFP!!!

    Looks like you are doing well.

    Keep reading Pool School. There is an article about how to low the TA if you want to do that actively ... or just keep the pH in range and the TA will slowly drop.

    After you last response. Hold off on worrying about the TA until you complete the SLAM process.
    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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