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Thread: Leaving the darkside, need advice

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    Leaving the darkside, need advice

    owned my 27' AG pool since 2006
    tired of the pool store yo-yo ride.
    now pool is:
    170000 gal
    water is clear
    FC= .04
    CC = .6
    PH = 7.2
    TA = 126
    CYA = 111
    CH = 270

    ordered my test kit, wont be here for couple of days.
    do I shock it now or just get levels up according to chart(9ppm with CYA this high)?
    was thinking shocking would be a waste till I get my kit to test for loss of chlorine?

    thoughts?
    27" round AG (vinyl)
    17,000 gal
    WaterWay 22" sand filter
    1.5 hp pump
    new zeobrite sand this year(100 lbs)
    pool rover

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    Mod Squad jblizzle's Avatar
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    Re: Leaving the darkside, need advice

    Welcome to TFP!!!

    If your CYA is at all to be believed, then you are in for a massive amount of water changes before there is any point to adjusting anything. Although the CYA test is the one that pool stores are the worst at (assume that is the source of your numbers?).
    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: Leaving the darkside, need advice

    yes it is from pool store.
    tested yesterday.
    they mark out HIGH and write in OK next to it each test
    started at 10 a month ago, then 30, then 60 now 111.

    should i wait for the TF-100 to get here?

    feel I need some FC in there, but realize it may need drained.
    27" round AG (vinyl)
    17,000 gal
    WaterWay 22" sand filter
    1.5 hp pump
    new zeobrite sand this year(100 lbs)
    pool rover

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    thehowheels's Avatar
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    Re: Leaving the darkside, need advice

    Quote Originally Posted by drdispatch
    owned my 27' AG pool since 2006

    170000 gal
    I'm hoping that's a typo, otherwise I'd like to see some photos of this monster pool
    Matt
    9k gallon, plaster, IG. Raised spa w/ spillover into pool. AO Smith Century Centurion / Purex Triton WisperFlo 0.5 HP, Hayward 1.5 HP (spa), Polaris 1-516-01 1.5 HP (blower). Hayward DE3620 36 ft2 72 GPM DE Filter, Polaris 145 cleaner. Pool built ~1980.
    Trouble-free, BBB since: April 25, 2013

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    Mod Squad jblizzle's Avatar
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    Re: Leaving the darkside, need advice

    So you have been using a lot of pucks and/or dichlor shock I am guessing to get a CYA rise that fast. If true, then the CYA is likely pretty high. You could start replacing water while waiting since you are not able to do a full drain with a liner pool anyway.

    Maybe start with a 50% drain and refill and then test it when the kit arrives.

    Please add your pool details and location as described HERE as it will help us help you.

    I am also guessing you added an extra 0 to your pool volume ... unless it really is a 27' diameter, 40' deep pool
    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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    redhdgirl417's Avatar
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    Re: Leaving the darkside, need advice

    Quote Originally Posted by thehowheels
    Quote Originally Posted by drdispatch
    owned my 27' AG pool since 2006

    170000 gal
    I'm hoping that's a typo, otherwise I'd like to see some photos of this monster pool
    Me too...my 24' is only 13900 gallons.
    13,900gal 24'x52" Backyard Leisure Heritage AGP
    20ml All Swirl Flat Liner
    Pentair 1.5hp Pump and 150# Sand Filter System
    Smart Step Ladder w/Smart Light
    TF100 test kit, BBB Baby!

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    Re: Leaving the darkside, need advice

    Quote Originally Posted by redhdgirl417
    Quote Originally Posted by thehowheels
    Quote Originally Posted by drdispatch
    owned my 27' AG pool since 2006

    170000 gal
    I'm hoping that's a typo, otherwise I'd like to see some photos of this monster pool
    Me too...my 24' is only 13900 gallons.
    Yeah, but his pool is 40 feet deep.

    34K gal IG, 37'x40' lagoon, vinyl, Pentair IntelliFlo VS Pump, 500# Hayward sand filter, Jandy SWG, Raypac heat pump, 4 deck jets, Hayward Super Pump + deck fountain, Dolphin Oasis Z5

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    Re: Leaving the darkside, need advice

    wheels: yep, thats a big typo, 17K gallons(27' round AG)

    we added like 6-9 lbs of shock several times trying to bust the CC level
    last shock was tuesday: 5lbs

    large 22" sand filter
    1.5 hp
    new zeobrite sand this year
    tab floater with 4x 3" tabs-.wide open

    so just use hose from pump->into pool-.get say half or more water out and refill
    retest when kit arrives?

    I got here because even with 7-10 lbs of shock and tabs in floater, FC keeps going way down after few hours or a day
    27" round AG (vinyl)
    17,000 gal
    WaterWay 22" sand filter
    1.5 hp pump
    new zeobrite sand this year(100 lbs)
    pool rover

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    Mod Squad jblizzle's Avatar
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    Re: Leaving the darkside, need advice

    Read Pool School while you are waiting.

    You seem to be a classic case of too much trichlor/dichlor which adds FC and CYA. The FC is consumed, the CYA builds up. The required FC to prevent algae is a % of the CYA level. So as CYA goes up, the required FC goes up. Eventually the pucks and powders just will not add enough FC to overcome the CYA.

    You need to get the CYA to a reasonable level and then start using liquid chlorine which does not add more stabilizer.
    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: Leaving the darkside, need advice

    thanks for all the replies

    will get the water drained, its 7 years old anyway
    sure it will be fine using the liquid bleach and getting away from the chems
    27" round AG (vinyl)
    17,000 gal
    WaterWay 22" sand filter
    1.5 hp pump
    new zeobrite sand this year(100 lbs)
    pool rover

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    Re: Leaving the darkside, need advice

    so....
    whats most I can drain safely here?
    1/2 the pool?
    27" round AG (vinyl)
    17,000 gal
    WaterWay 22" sand filter
    1.5 hp pump
    new zeobrite sand this year(100 lbs)
    pool rover

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    Mod Squad jblizzle's Avatar
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    Re: Leaving the darkside, need advice

    I think generally you want to leave at least 1 foot of water in the shallow end (if you have one) to avoid the liner able to shift. 50% should certainly be safe, but you may be able to go a little more.
    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: Leaving the darkside, need advice

    That's because you are unable to maintain sanitary FC levels and likely have algae or something growing. With CYA that high it takes a lot of chlorine to reach and maintain shock FC levels. The shock powder is likely dichlor which also contains CYA which is only making it worse.

    Notice that min FC for CYA of 100 is 7. Meaning if it ever dips below that stuff is likely to grow and the target would be 12 and shock of 39. If your CYA number is to believed (and I do based on the pucks and dumping shock into it) then water replacement is necessary. Then you can retest when your kit arrives and post up a full set of numbers for us. Highly likely you'll need to go through the shock process so read about that in pool school.

    CYA/FC chart here
    pool-school/chlorine_cya_chart_shock
    18x36 inground vinyl lined, Hayward sand filter and tablet chrolinator, approx 18k gallon

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    Re: Leaving the darkside, need advice

    was reading other posts, found this one.

    "For the CYA you should not see the dot at all. Just pour the solution back and forth a few times and see if you consistently get the same reading (you are outside with your back to the sun right?) You likely still need to add some more if you are not up around 80ppm (assuming you have a lot of sun)."

    mine is 111, my pool has NO shade at all, to me i need to get rid of half the water or less to get CYA down to a usable level?
    way I read this i need to drop CYA to 60-80, am at 111...so I need to go down like 30-40 points?
    27" round AG (vinyl)
    17,000 gal
    WaterWay 22" sand filter
    1.5 hp pump
    new zeobrite sand this year(100 lbs)
    pool rover

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    Richard320's Avatar
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    Re: Leaving the darkside, need advice

    Quote Originally Posted by drdispatch
    was reading other posts, found this one.

    "For the CYA you should not see the dot at all. Just pour the solution back and forth a few times and see if you consistently get the same reading (you are outside with your back to the sun right?) You likely still need to add some more if you are not up around 80ppm (assuming you have a lot of sun)."

    mine is 111, my pool has NO shade at all, to me i need to get rid of half the water or less to get CYA down to a usable level?
    way I read this i need to drop CYA to 60-80, am at 111...so I need to go down like 30-40 points?
    Those instructions are for someone with clear water and a salt water generator. For a murky mess that's about to undergo the shock process, 30 is a pretty good number. 40 is do-able. Get much above that and you start buying bleach by the drum, not the jug.

    Once the shock process is complete and the water is sparkling, then you can raise CYA if you want to.
    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!

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    Re: Leaving the darkside, need advice

    good enough, for the record my pool IS crystal clear.
    just HIGH on CYA reading and no real FC

    so..was going to go BBB method rather then tossing more $$ at pool store.
    also 7 year old water prob needs changing, I assume.
    27" round AG (vinyl)
    17,000 gal
    WaterWay 22" sand filter
    1.5 hp pump
    new zeobrite sand this year(100 lbs)
    pool rover

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    Richard320's Avatar
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    Re: Leaving the darkside, need advice

    Quote Originally Posted by drdispatch
    good enough, for the record my pool IS crystal clear.
    just HIGH on CYA reading and no real FC

    so..was going to go BBB method rather then tossing more $$ at pool store.
    also 7 year old water prob needs changing, I assume.
    If the water is clear, I'd hold off on doing anything but adding bleach until I had some test results I could trust.
    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!

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    Re: Leaving the darkside, need advice

    pic of water clarity with CYA @ 111, FC =.02
    Attached Images Attached Images
    27" round AG (vinyl)
    17,000 gal
    WaterWay 22" sand filter
    1.5 hp pump
    new zeobrite sand this year(100 lbs)
    pool rover

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    Re: Leaving the darkside, need advice

    I ordered my TF100 yesterday, paid for 2nd day air, wont be here till Monday

    I think I will run a sample to pool store to get latest CYA reading, we had 3" of rain last night, I think it will be lower now.
    have not added any tri shock or tabs since Tuesday of this week, so have little to NO FC.

    best plan knowing test kit will be 4 more days getting here?
    was going to drain about 60% of water, replace. then start shock process after I get CYA down to better level?

    I feel my small kit can tell me FC level till monday, so I can drain and shock with bleach.
    27" round AG (vinyl)
    17,000 gal
    WaterWay 22" sand filter
    1.5 hp pump
    new zeobrite sand this year(100 lbs)
    pool rover

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    Mod Squad jblizzle's Avatar
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    Re: Leaving the darkside, need advice

    Given the history, the CYA is certainly high. So replacing half the water now would be fine. After getting the test kit, you may find you should replace more water.
    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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