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Thread: Need help with SLAM

  1. Back To Top    #1

    Join Date
    Jul 2016
    Location
    Lubbock, Texas
    Posts
    2

    Need help with SLAM

    Hello, I have been lurking and reading as much as I can on this site over the past week. Long story short, my mother in law's pool was an awful swamp. Before coming here, I didnt know better and we used an algaecide.. Didnt work, and now I know why! I do not have a test kit above the strips, so I have been taking water every day to leslies to get tested.

    Sunday morning, the test showed FC up to 16, CYA 20. Everything else good according to the pool chem page.
    Monday afternoon- FC 6, CYA 30
    Tuesday Morning- FC 5 CYA 45.

    I just cant seem to keep the chlorine up! The pool is 23000 gals and I have been using the pool calculator. I was shocked that it was so low on monday. Per the calculator, we added 242 oz of bleach monday afternoon and another 121 monday. The FC should have been no less than 12. Tuesday morning added another 121 oz of bleach, waited 30 minutes then collected water to test and the FC was only 6!

    It is getting more blue, but I cant keep the chlorine up at all. Keep adding more bleach? Should I go add like 242 oz each hour? We are using home depo germicidal bleach, and Ive read here that others have used it successfully.

    Thank you!

  2. Back To Top    #2

    Join Date
    May 2015
    Location
    Land O Lakes, FL
    Posts
    526

    Re: Need help with SLAM

    You really need a test kit to perform a slam. From reading on this site you should have realized that pool store testing is not trusted and the test kits will provide a better result for you
    Matt
    2016 Pool Build: 12k IG Blue Granite Pebblesheen, Travertine Coping & Pavers, Pentair IntelliFlo, Intellichlor, Easytouch, Clean & Clear 320, Heliocol Solar - TF-100 test kit w/ SpeedStir
    SWG Run Time Calculator

  3. Back To Top    #3
    ned8377's Avatar
    Join Date
    Apr 2015
    Location
    Wake Forest, NC
    Posts
    239

    Re: Need help with SLAM

    You should get a test kit #1 and # 2 keep doing what you have been doing - adding bleach. Don't know how big your pool is but add one gallon per day until you get your test kit.
    True L 45,000 gal Hayward IG vinyl pool. Hayward Tristar 2.40 THP; 1.5 FRHP/1.60 SF. Hayward Model # S310T2 Sand Filter. Aqua Rite T-15. Aqua Comfort 154,000 BTU Heat Pump. TF-100

  4. Back To Top    #4

    Join Date
    Jul 2016
    Location
    Lubbock, Texas
    Posts
    2

    Re: Need help with SLAM

    Yes I realize I need a test kit. Unfortunately they take a few days to get here and I don't want to lose progress I have made in the waiting process. Should I have ordered one sooner, yes obviously.

    It's 23,000 gallons. Between tests I added a total of 4 121 Oz bottles and was still @ 5. What's the most amount that can be added at once?

  5. Back To Top    #5
    Texas Splash's Avatar
    Join Date
    Jun 2014
    Location
    South-Central Texas, Marion/San Antonio
    Posts
    12,937

    Re: Need help with SLAM

    If we round-up your last CYA test to 50, then your SLAM FC level should be "20". So depending upon what you show as your current level, you could estimate as best as you can while waiting. You can add bleach periodically per gallon knowing each gallon will increase FC by a little over 3.5 FC in your 23K pool. Maybe that will help while you wait for the kit.

    Remember though, you won't win any battles until you can test accurately. So don't get too frustrated until your have the test kit with the FAS-DPD (powder & drops) to accurately test FC. That's the key. Then you'll be able to test and dose immediately to maintain the FC of 20. Until then, just hang in there.
    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.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  6. Back To Top    #6

    Join Date
    Aug 2014
    Location
    Northern IL
    Posts
    4,615

    Re: Need help with SLAM

    Welcome! Please click on settings at the top of this page and then at the left click signature. Add as much info as you can and then update it when you get your kit.

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