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Thread: What did I do??

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    Join Date
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    What did I do??

    Our pool finally finished filling this morning after having the plaster, tile, and coping all redone. So, I get the filter turned on, backwashed real good, refilled with de. Then I put in 2 jugs of bleach. I knew FC was at 0 and since it took a whole week to refill the pool, I knew it needed a lot. Then I came inside for lunch. Figured I'd let that circulate a while then I'd go do my full water testing and see what else to add. Well, then my husband gets home from running errands and goes, "What did you do to the poo??" I was like, "I just added bleach and turned on the filter, why?". Our pool is full of yellow water. Like, it literally looks like we filled it up with pee!! Oh my gosh. What did I do?? Please don't tell me I'm like ruining our brand new plaster right now!! I went ahead and did my full water test.

    pH: 8.2 (at least...)
    FC: 2.5
    CC: 0
    TA: 240
    CH: 110
    CYA: 0

    So far, I have added 4lb out of the recommended 9lb from pool calculator for stabilizer. Also have added the 3qt 1c of muratic acid to lower pH. Need to run to Leslie's for some calcium hardener since we don't have any at the house. The water test came back negative for metals, but I do know my husband still added a bottle of MetalOut while it was filling to make sure we wouldn't end up staining the new plaster. Any other recommendations about my yellow water??
    Julie
    ~27,000 gallon 18'x36' IG concrete pool built approx. 1969
    FNSP36 Pentair DE filter w/ 1hp pump
    coping, tile, plaster redone March 2013

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    JasonLion's Avatar
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    Re: What did I do??

    That is almost certainly being caused by iron in the water reacting with the high PH and addition of bleach to form micro-crystals that tint the water. If you bring the PH down to something reasonable and continue with the CYA addition the color should go away. If it doesn't, adding some sequestrant will take care of it.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    duraleigh's Avatar
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    Re: What did I do??

    Lower your pH into the mid 7's with muriatic and keep it there
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: What did I do??

    Darn it. The pressure on the filter ended up around 18 or so by the end of the day so had to turn it off. Wasn't home all day so just turned it on again. Still up about 16-17. I know in supposed to be running it continuously for 48hrs per the cya instructions. But I can't with such a high pressure, right? And I shouldn't try to backwash since I'll just wash out all the cya I just put in! Is it just so high because of the cya that hasn't dissolved yet? Should I just run it as frequently as possible until the pressure either lowers or it's been long enough I can try to backwash again? pH is currently 7.5 and FC is about 1.
    Julie
    ~27,000 gallon 18'x36' IG concrete pool built approx. 1969
    FNSP36 Pentair DE filter w/ 1hp pump
    coping, tile, plaster redone March 2013

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    linen's Avatar
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    Re: What did I do??

    What is your "clean" filter pressure? We recommend backwashing when it goes up 25%, but letting the system run a bit higher shouldn't hurt anything.

    It sounds like you put the cya directly into the water in the skimmer? That is not our recommended approach...we suggest putting it in a sock and either placing the sock in the skimmer or hanging it in front of a return (my personal preferred method).
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Mod Squad jblizzle's Avatar
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    Re: What did I do??

    Why do you think that 18psi is high pressure? Many members see 30psi and the equipment is designed to 50psi.

    What is your normal clean pressure?
    How did you add the CYA? We recommend putting it in a sock in front of a return jet.
    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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  7. Back To Top    #7

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    Re: What did I do??

    Right, sorry. Normal clean pressure normally runs in the 10-11 range. Our filter plug blew out when pressure reached about 30 a couple months ago so I've been leery to let it get too high again! I did add per instruction on the bottle right into the skimmer. /
    Julie
    ~27,000 gallon 18'x36' IG concrete pool built approx. 1969
    FNSP36 Pentair DE filter w/ 1hp pump
    coping, tile, plaster redone March 2013

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    Mod Squad jblizzle's Avatar
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    Re: What did I do??

    Worst case is you backwash and lose some of the CYA. Which you can then test the level in a week and add more in a sock.
    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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    Mod Squad Bama Rambler's Avatar
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    Re: What did I do??

    That's just one of the reasons we don't recommend following container instructions.

    Where did your fill water come from? If from a well, I'd say go ahead and add a startup dose of sequestrant for new plaster. You don't want to stain the new plaster.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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