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Thread: I'm SLAMmin'...

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    I'm SLAMmin'...

    So of course, I ran out back with it. Here are initial readings:

    FC 9.5
    CC 0
    pH 7.5
    TA 140
    CH 425
    TA 140
    CYA 40

    The FC is high, as expected, because I've had some algae and I've been sort of blindly keeping it high using WalMart 10% bleach until the kit arrived. So I think, my next move is to test FC/CC again at sundown, then again first thing before the sun hits it to see if my blind SLAM worked? If I don't lose FC, then I can let it drift down to a target of 5, but never under 3. Right?

    As for the high CH -- I do need to add some water. Will adding a few inches (3-4") of water in a pool of my size help lower the CH? Should I worry about TA right now? Perhaps if I pass my OCLT, then some of this will resolve as the FC drifts down to target? Wishful thinking?

    Thanks (and wow, I can't believe I just wrote all this and it *almost* makes sense... lol)!
    Last edited by kiv558; 07-08-2016 at 05:09 PM. Reason: Forgot CYA in my excitement...
    Rhonda, Outside of Boston, MA
    20k gallon IG gunite circa 1984, very old/stained/worn out plaster finish
    4820 Hayward DE filter, no idea on the pump... will figure that out!, T-100 test kit, Speed Stir is the BOMB!
    *Researching options to refinish Spring 2017!*

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    Re: Ridiculously excited - TFT-100 arrived today!

    You're missing your CYA number. That one is pretty critical!
    8,500gal plaster in-ground with attached spa, two floor drains, one skimmer. Chlorine, City Water.
    Pentair WhisperFlo 1hp Pump, MagnaTek Midcentury EPlus motor, Pentair CleanNClear 200SF Cartridge filter, Purex Triton MiniMax 250 Gas Heater, Pentair SunLite, AutoFill.
    Kreepy Krauly Cruiser, TF-100 with SpeedStir. :D

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    Re: Ridiculously excited - TFT-100 arrived today!

    What is your CYA? Your CH is probably fine.
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
    Test Kits - Pool Math - Chlorine/CYA/Target/Slam Chart

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    Re: Ridiculously excited - TFT-100 arrived today!

    Whoops! Edited original post -- CYA is 40.
    Rhonda, Outside of Boston, MA
    20k gallon IG gunite circa 1984, very old/stained/worn out plaster finish
    4820 Hayward DE filter, no idea on the pump... will figure that out!, T-100 test kit, Speed Stir is the BOMB!
    *Researching options to refinish Spring 2017!*

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    Re: Ridiculously excited - TFT-100 arrived today!

    That's better!

    Ok, so your CH can never be lower than the CH of your fill water (without doing something really expensive). That means if you drain half of your water, and fill it with new fill, well, it will be some calculation I'm not talented enough to figure out to get your new CH. Draining three or four inches of water probably won't make an appreciable dent in your CH levels. That said, I believe 425 is pretty manageable as long as you use PoolMath to calculate your CSI number and keep it religiously in the zone by carefully maintaining your pH and TA values.
    8,500gal plaster in-ground with attached spa, two floor drains, one skimmer. Chlorine, City Water.
    Pentair WhisperFlo 1hp Pump, MagnaTek Midcentury EPlus motor, Pentair CleanNClear 200SF Cartridge filter, Purex Triton MiniMax 250 Gas Heater, Pentair SunLite, AutoFill.
    Kreepy Krauly Cruiser, TF-100 with SpeedStir. :D

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    Texas Splash's Avatar
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    Re: Ridiculously excited - TFT-100 arrived today!

    It's like Christmas in July when a TF-100 arrives. We're like little kids. You have the right idea about your FC. As long as your water is crystal clear now and you have no CCs, if you pass the OLCT let it sink. I wouldn't worry about your CH right now. Adding water will not lower it (only water exchange), but by properly managing pH and TA you can compensate for an elevated CH.

    Eventually you'll probably want to follow the Pool School - Lower Total Alkalinity page which will help lower TA and should help pH remain more stable. In addition, a lower TA will help compensate for the elevated CH. You're doing well!
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
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    Re: Ridiculously excited - TFT-100 arrived today!

    Thanks, all! It is indeed Christmas in July. So I'm gonna watch that FC like a hawk (I will NOT have FC 0 again!!! Do you hear me??), and I will concentrate on the TA/pH trick in Pool School.

    FWIW, this plaster is OLD. We're making our rookie mistakes on it this year, and budgeting to re-do plaster/tile/coping next spring.
    Rhonda, Outside of Boston, MA
    20k gallon IG gunite circa 1984, very old/stained/worn out plaster finish
    4820 Hayward DE filter, no idea on the pump... will figure that out!, T-100 test kit, Speed Stir is the BOMB!
    *Researching options to refinish Spring 2017!*

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    Mod Squad pooldv's Avatar
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    Re: Ridiculously excited - TFT-100 arrived today!

    CH at 425 is fine.
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    Re: Ridiculously excited - TFT-100 arrived today!

    Kiv558,

    Please be careful! I think you are contracting sparkylpoolitis.....there's no cure.

    You have grasped the TFP concepts very well. Nice work!
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad kimkats's Avatar
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    Re: Ridiculously excited - TFT-100 arrived today!

    Quote Originally Posted by kiv558 View Post
    Thanks, all! It is indeed Christmas in July. So I'm gonna watch that FC like a hawk (I will NOT have FC 0 again!!! Do you hear me??), and I will concentrate on the TA/pH trick in Pool School.

    FWIW, this plaster is OLD. We're making our rookie mistakes on it this year, and budgeting to re-do plaster/tile/coping next spring.
    LOVE it ALL! Wait until you see just how clear it will be now that you have the test kit. You just think it is clear now. Wait until you need to wear sunglasses to look at it!

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

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    Re: Ridiculously excited - TFT-100 arrived today!

    Sparklypoolitis! LOL, that's a good one. I'm definitely seeing symptoms. Better go find my shades, and a cold beverage and rest...
    Rhonda, Outside of Boston, MA
    20k gallon IG gunite circa 1984, very old/stained/worn out plaster finish
    4820 Hayward DE filter, no idea on the pump... will figure that out!, T-100 test kit, Speed Stir is the BOMB!
    *Researching options to refinish Spring 2017!*

  12. Back To Top    #12
    Mod Squad kimkats's Avatar
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    Re: Ridiculously excited - TFT-100 arrived today!

    Shades, adult drink, and a float while IN the pool! It does not get any better than that!

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

  13. Back To Top    #13

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    Re: Ridiculously excited - TFT-100 arrived today!

    Uh oh... so I did lose FC overnight. Fail! But to be expected, since I was doing this blindly.

    FC 7.5, which means a 2 ppm loss overnight.

    According to PM, I added 3 gallons of my 10% Walmart bleach to bring it up to shock level of 16. Turned on the pump and went back to bed. Two hours later, FC is 21! Whoops!

    So I played around in PM trying to figure out why I overshot it. Maybe PB told me my pool is bigger than it actually is? I was using 35k gallons. If I take that measurement down to 22k gallons, then my 3 jugs of bleach would have taken me up to FC 21. (It's a sort of kidney shape, so not an easy measurement -- but I will get out there today with my tape and see what I can do). Is there anything else that would have made my FC jump that high?

    So now just test it a few times today and let it drift down to FC16? Scrub it well all around, obviously (wire brush)... Another OFCL test tonight?

    That sneaky algae is going DOWN.
    Rhonda, Outside of Boston, MA
    20k gallon IG gunite circa 1984, very old/stained/worn out plaster finish
    4820 Hayward DE filter, no idea on the pump... will figure that out!, T-100 test kit, Speed Stir is the BOMB!
    *Researching options to refinish Spring 2017!*

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    Re: Ridiculously excited - TFT-100 arrived today!

    35K is a pretty big pool......maybe even REALLY big.

    Post a pic with something relevant (like a pool lounge chair) and we can help guesstimate but you should measure and do the math. Knowing your gallons is extremely important.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Re: Ridiculously excited - TFT-100 arrived today!

    Yeah, it seems big to me, but what do I know? Trying to measure it -- roughly 40' x 20'. Shallow end is about 3.5', and deep end might be 8'? So the calculator seems right. Pool guy said it's 35-37k gallons...

    Hmmm, so why the jump in FC? User testing error?

    IMG_20160709_093329423.jpg
    Rhonda, Outside of Boston, MA
    20k gallon IG gunite circa 1984, very old/stained/worn out plaster finish
    4820 Hayward DE filter, no idea on the pump... will figure that out!, T-100 test kit, Speed Stir is the BOMB!
    *Researching options to refinish Spring 2017!*

  16. Back To Top    #16

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    Re: I'm SLAMmin'...

    Are you sure you had the right strength of bleach selected in the calculator?
    8,500gal plaster in-ground with attached spa, two floor drains, one skimmer. Chlorine, City Water.
    Pentair WhisperFlo 1hp Pump, MagnaTek Midcentury EPlus motor, Pentair CleanNClear 200SF Cartridge filter, Purex Triton MiniMax 250 Gas Heater, Pentair SunLite, AutoFill.
    Kreepy Krauly Cruiser, TF-100 with SpeedStir. :D

  17. Back To Top    #17

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    Re: I'm SLAMmin'...

    I double checked the PM and the actual jugs. These are the 10% ones from the pool aisle at WalMart (checked the dates too). So I think I'm right... here's a screen shot of my PM:

    Screen Shot 2016-07-09 at 12.35.53 PM.jpg
    Rhonda, Outside of Boston, MA
    20k gallon IG gunite circa 1984, very old/stained/worn out plaster finish
    4820 Hayward DE filter, no idea on the pump... will figure that out!, T-100 test kit, Speed Stir is the BOMB!
    *Researching options to refinish Spring 2017!*

  18. Back To Top    #18

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    Re: I'm SLAMmin'...

    Might my CYA be off? Back to user error... but I think that would just affect the level of FC I want to get to for SLAM, not how much it increases the FC. Hmmm... off to go test again and see if it's coming down. It's cloudy and cool here today, so we'll see.
    Rhonda, Outside of Boston, MA
    20k gallon IG gunite circa 1984, very old/stained/worn out plaster finish
    4820 Hayward DE filter, no idea on the pump... will figure that out!, T-100 test kit, Speed Stir is the BOMB!
    *Researching options to refinish Spring 2017!*

  19. Back To Top    #19
    Mod Squad kimkats's Avatar
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    Re: I'm SLAMmin'...

    We will work on tweaking you pool size as soon as you do your next FC test and post it.

    Kim
    TFP Moderator 33x52 round AG 25,600 gals Sand Filter 1.5hp Pump - 2 Speed, SLAM, Pool School, Recommended Levels, Recommended Chemicals, Pool Math, Chlorine/CYA Chart, TF-100 Test Kit

  20. Back To Top    #20

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    Re: I'm SLAMmin'...

    Current FC is 14, so I need to add bleach! Might have dropped faster because we were brushing?
    Rhonda, Outside of Boston, MA
    20k gallon IG gunite circa 1984, very old/stained/worn out plaster finish
    4820 Hayward DE filter, no idea on the pump... will figure that out!, T-100 test kit, Speed Stir is the BOMB!
    *Researching options to refinish Spring 2017!*

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