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Thread: Drain Pool?

  1. Back To Top    #1

    Join Date
    Feb 2014
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    Leander, TX
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    Drain Pool?

    I need to drain some water because my CYA levels are pretty high. Given my equipment, what's the preferred/easiest/best method of draining some water? Also, what's an appropriate amount to drain and refill with fresh water?

    Thanks!
    23k gal IG pebble, 48 sq ft Pentair FNS Plus DE filter (FNSP 48) 96 GPM, 1.5 HP WhisperFlo pump, Kreepy Krauly Legend Robot.
    Pool was built in 2011, in Central Texas (Leander, TX)

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    Richard320's Avatar
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    San Dimas, CA (LA County)
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    Re: Drain Pool?

    Insufficient data.

    First question: what is your current CYA reading, where did it come from, and what is your target?
    Second: Do you have a multiport valve on your filter?
    Third: Can you isolate the main drain in your pool?
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  3. Back To Top    #3

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    Re: Drain Pool?

    Richard, here are my values:

    test-results.jpg

    I'm very new to this so I'm trying to figure out what to do and the best way to do it. I do have a multiport valve. There appear to be 2 drains on the deep end of the pool, not sure which is which, but they are only a couple of feet apart.

    - - - Updated - - -

    BTW, Leslie's Pool Supply did the analysis.
    23k gal IG pebble, 48 sq ft Pentair FNS Plus DE filter (FNSP 48) 96 GPM, 1.5 HP WhisperFlo pump, Kreepy Krauly Legend Robot.
    Pool was built in 2011, in Central Texas (Leander, TX)

  4. Back To Top    #4
    Mod Squad jblizzle's Avatar
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    Re: Drain Pool?

    We put very little trust in pool store testing, especially the CYA test. You would be better served by investing in one of the recommended test kits and posting up those numbers before you start making decisions.

    The CYA test maxes out at 100 so it could actually be much higher. Get a kit and we can teach you how to estimate higher levels so you know how much water needs to be replaced.
    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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  5. Back To Top    #5

    Join Date
    Feb 2014
    Location
    Leander, TX
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    Re: Drain Pool?

    Thanks...I guess I'll order a kit afterall
    23k gal IG pebble, 48 sq ft Pentair FNS Plus DE filter (FNSP 48) 96 GPM, 1.5 HP WhisperFlo pump, Kreepy Krauly Legend Robot.
    Pool was built in 2011, in Central Texas (Leander, TX)

  6. Back To Top    #6
    Mod Squad jblizzle's Avatar
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    Re: Drain Pool?

    BTW, if your CYA is 100ppm, then your FC is WAY too low. You would need to keep it above 7ppm to prevent algae ... pool stores just do not seem to grasp the CYA/FC relationship. See: 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
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

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