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Thread: SLAM - TA Rising a bit (The Woodlands, Texas)

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    Dejavu21's Avatar
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    Question SLAM - TA Rising a bit (The Woodlands, Texas)

    Guys,

    I started getting the pool ready last week after being out of town a week and coming back to a green pool. I started by getting the PH down and began slamming yesterday. I added some CH to get it up as well yesterday. Below are the numbers for the last few days.

    Since FC is 16 this morning I will continue to SLAM again, but was curious if I should worry about the TA, which seems to be rising and what the appropriate level should be since the goal says 90+?


    PH FC CYA CH CC TA
    Goals 7.5 -7.8 5.0-7.0 30-50 250-300 70-90+
    7-Mar 8.2 0 90 175 0
    8-Mar 7.6 0 90 175 0 110
    9-Mar 7.7 6 200 0.5 120
    10-Mar 7.7 4 175 0 120
    11-Mar 7.6 16 250 0.5 130
    Also, I realize the CYA is a bit high, but I will deal with that after getting the pool stable. As for the CYA, I am going to try the very controversial Bio-Active product. I've seen some negative stuff on it, but I also know two people who used it and had great results.
    Pool Details - 20,000 Gallon Chlorine, IG, Dark Pebble Finish, Cartridge Filters

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    Mod Squad Texas Splash's Avatar
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    Re: SLAM - TA Rising a bit (The Woodlands, Texas)

    For a SLAM, forget everything except the initial lowering of pH (to about 7.2) then focus on an accurate CYA and maintaining the correct FC. First question - Do you plan on keeping the CYA that high? (Disregard) - you already answered that one. If so, then you need to increase FC to "35". If you decide to reduce CYA now, then don't add any chemicals until you exchange the amount of water you want to adjust the CYA a bit lower as you see fit.

    Everything else (TA, etc) can wait until you pass the SLAM. Hope that helps.
    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
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    Dejavu21's Avatar
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    Re: SLAM - TA Rising a bit (The Woodlands, Texas)

    Thank you, much appreciated!
    Pool Details - 20,000 Gallon Chlorine, IG, Dark Pebble Finish, Cartridge Filters

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    Dejavu21's Avatar
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    Re: SLAM - TA Rising a bit (The Woodlands, Texas)

    One more question, i got the FC up too 39-40 on Sunday. When I tested after sundown last night it was 39. This morning it was 36. My question is, Since I am already above shock level do I leave as is and retest after sundown tonight and see if it has dropped more than 1ppm tomorrow morning? I am under the impression that since it dropped 3 ppm last night that their is still an algae presence.
    Pool Details - 20,000 Gallon Chlorine, IG, Dark Pebble Finish, Cartridge Filters

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    Re: SLAM - TA Rising a bit (The Woodlands, Texas)

    Yep the drop means you still have it. Keep maintaining slam levels
    24ft x 52in AGP 18000 gal
    sand filter, 200#,1.5 hp single speed pump
    Wood deck (still in progress...)

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    Dejavu21's Avatar
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    Re: SLAM - TA Rising a bit (The Woodlands, Texas)

    Quote Originally Posted by madwil View Post
    Yep the drop means you still have it. Keep maintaining slam levels

    Thanks
    Pool Details - 20,000 Gallon Chlorine, IG, Dark Pebble Finish, Cartridge Filters

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    Dejavu21's Avatar
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    Re: SLAM - TA Rising a bit (The Woodlands, Texas)

    Ok, passed the OCLT test. Should I wait until the Chlorine levels are back to daily normal levels before adjusting PH, etc. since PH and TA can get outta whack during the slam?
    Pool Details - 20,000 Gallon Chlorine, IG, Dark Pebble Finish, Cartridge Filters

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    Re: SLAM - TA Rising a bit (The Woodlands, Texas)

    Yes. Once fc is below 10 you can adjust and balance the rest
    24ft x 52in AGP 18000 gal
    sand filter, 200#,1.5 hp single speed pump
    Wood deck (still in progress...)

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    Re: SLAM - TA Rising a bit (The Woodlands, Texas)

    Ok, passed the OCLT test.
    Is your water crystal clear? If so, you are good to go.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Dejavu21's Avatar
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    Re: SLAM - TA Rising a bit (The Woodlands, Texas)

    Yes, water is very clear. Probably could use another brush/vacuum. But looks great.
    Pool Details - 20,000 Gallon Chlorine, IG, Dark Pebble Finish, Cartridge Filters

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    Re: SLAM - TA Rising a bit (The Woodlands, Texas)

    Actually, now that the sun is out, it's still a bit hazy, not crystal clear. I assume this is due to a high PH and other factors. Should I be concerned that not all the algae is gone even though I passed the OTLC test?
    Pool Details - 20,000 Gallon Chlorine, IG, Dark Pebble Finish, Cartridge Filters

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    Re: SLAM - TA Rising a bit (The Woodlands, Texas)

    Remember oclt is only one criteria. Also clear water and no cc before algaecdefinitely gone
    24ft x 52in AGP 18000 gal
    sand filter, 200#,1.5 hp single speed pump
    Wood deck (still in progress...)

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    Re: SLAM - TA Rising a bit (The Woodlands, Texas)

    Yeah, you have not yet passed OCLT

    Passing the OCLT requires three things...
    A. Pool water should be crystal clear with no sign of algae anywhere
    B. CC's test result should be .5 ppm or less
    C. You should not lose more than 1 ppm FC overnight.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Dejavu21's Avatar
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    Re: SLAM - TA Rising a bit (The Woodlands, Texas)

    UPDATE -
    Ok, so yesterday the water was Crystal Clear, I see no signs of Algae and the FC did not drop more than 1ppm overnight and CC is 0, PH is 7.6.

    Yesterday morning the FC was down to 22 ppm and after a bright warm sunny day yesterday, this morning's FC was still 22 ppm. Is this normal, should'n it have dropped some?
    Pool Details - 20,000 Gallon Chlorine, IG, Dark Pebble Finish, Cartridge Filters

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