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Thread: Some number check please after SLAM

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    Join Date
    Sep 2015
    Location
    Charlotte,NC
    Posts
    79

    Some number check please after SLAM

    So i had put a Stenner in right around the fourth of july it was working perfectly went on vacation and it had issues stopped working and i ended up with some algae.(separate thread). Did the SLAM on Monday this week, all looks perfect now just wanted some numbers opinion.

    FC 7.5
    CC 0.0
    CYA 50(it was 0 and added hardener yesterday)
    PH 7.4
    TA 60
    CL 120

    It looks real good to me, but i think i want to raise the PH to 7.6 as i read that's the PH of human eyes. It is burning a little on eyes. Other than that pool is clear and sparkingly.

    Also since CYA is up i will have to watch my chlorine consumption and possible turn the timer down to keep FC from getting too high. I had it calibrated on how much the pool uses(4PPM per day) at 30 CYA and how much to inject. its perfect a 30 minute run on the Stenner adds 1PPM to the pool so its real easy.I find it odd that last time i checked CYA (beginning of month but Ive been traveling for 3 + weeks) and it was 30. Yesterday it was zero, I filled it completely up and it was like looking through clear water to black dot. i put in 4 lb which should have raised it 30 PPM but its sitting at 50 now. Probably was at 10-20 just couldn't read that low.
    Location Charlotte NC. Pool is a IG vinyl liner, 18X36 lagoon approx. 20,000 gallons odd shaped pool with different depths. 2 skimmers, 3 returns. Hayward 1HP pump, Hayward cartridge filter, Hayward chlorine feeder, Laars 250,000 BTU heater. Stenner pump with #2 tube for chlorine injection. Leslie branded Taylor test kit

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    Join Date
    Sep 2015
    Location
    Charlotte,NC
    Posts
    79

    Re: Some number check please after SLAM

    I checked again this AM and the PH is up to 7.6 from 7.4 without adding any chemicals. Is this PH bounce and do i need to raise my TA to fix that? Stenner is working beautifully I lose 3PPM a day and inject 1 PPM 3 times at night so starts out at 7.5 in AM ends a 4.5 at night. Then inject 3X overnight.
    This is from this morning;

    FC 7.5
    CC 0.0
    CYA 50
    PH 7.6
    TA 60
    CL 120
    Location Charlotte NC. Pool is a IG vinyl liner, 18X36 lagoon approx. 20,000 gallons odd shaped pool with different depths. 2 skimmers, 3 returns. Hayward 1HP pump, Hayward cartridge filter, Hayward chlorine feeder, Laars 250,000 BTU heater. Stenner pump with #2 tube for chlorine injection. Leslie branded Taylor test kit

  3. Back To Top    #3

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    Mr Bruce's Avatar
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    Mar 2014
    Location
    Greenville, SC
    Posts
    1,798

    Re: Some number check please after SLAM

    Hang on before you raise TA. Don't lower pH until it gets above 7.8, 7.6 or 7.7 might be the happy spot. Keep an eye on pH, if it does bounce around it might be time to bump up TA.

    Not sure on your burning eyes issue. Those number look pretty good, nothing I see would cause that.
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
    Test Kits - Pool Math - Chlorine/CYA/Target/Slam Chart

  4. Back To Top    #4

    Join Date
    Sep 2015
    Location
    Charlotte,NC
    Posts
    79

    Re: Some number check please after SLAM

    Yeah I wonder if it was because my CYA had dropped to zero and I was running 7-8 on my FC. The CYA has been a steady 50 since I did the old drain and refill to bring it down from 200+ last year. Was really surprised when I saw it was zero after the Stenner gave out when we were away 2 weeks ago and had the algae. Did a 3 day SLAM and its back to normal passed overnight test and CC is 0.0. I did add 4 lbs of stabilizer and now its back to 50 and eyes don't really bother me. Pool pops and numbers look fine to me as well.
    Location Charlotte NC. Pool is a IG vinyl liner, 18X36 lagoon approx. 20,000 gallons odd shaped pool with different depths. 2 skimmers, 3 returns. Hayward 1HP pump, Hayward cartridge filter, Hayward chlorine feeder, Laars 250,000 BTU heater. Stenner pump with #2 tube for chlorine injection. Leslie branded Taylor test kit

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