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Thread: Substitute for chlorine tablets???

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    dhimpel's Avatar
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    Substitute for chlorine tablets???

    I'm pretty new to this forum. For the last year I have been using a chlorinator with 3" tablets in it to keep my chlorine levels up. This year I noticed that it wasn't keeping up with my chlorine levels very well and my CYA is too high also. What can I use instead of the 3" tablets too keep my chlorine levels up?

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    Texas Splash's Avatar
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    Re: Substitute for chlorine tablets???

    It's all about regular liquid bleach here at TFP. That's the problem those tablets and "bags-o-shock". They drive CYA through the roof to the point the only thing you can do is a partial drain. Take a look at Pool School - ABCs of Pool Water Chemistry and you'll see more of what we're taking about. Have a great day.
    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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    JoyfulNoise's Avatar
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    Re: Substitute for chlorine tablets???

    Quote Originally Posted by dhimpel View Post
    I'm pretty new to this forum. For the last year I have been using a chlorinator with 3" tablets in it to keep my chlorine levels up. This year I noticed that it wasn't keeping up with my chlorine levels very well and my CYA is too high also. What can I use instead of the 3" tablets too keep my chlorine levels up?
    Have you gone to the PoolSchool link yet and read ABCs of Pool Water Chemistry?

    The use of trichlor 3" pucks is pretty much industry standard teaching for pool water chlorination. What they fail to mention is that constant use of the pucks over-stabilizes pool water (CYA gets too high) and then the chlorine is no longer effective. Then, instead of fixing the problem, you are led by the pool stores to use ever increasingly expensive chemical solutions (algaecides, shock powders, etc) that only make the water worse.

    If you want to follow the TFPC Method , then you will need to read up on the links in PoolSchool and make the switch to liquid chlorine or bleach. You will also need to purchase one of the Recommended Testkits (either the TF-100 or the Taylor K-2006) and get away from pool store water testing. Once you take control of your own testing, you will find that your pool is very easy to maintain using the methods taught here.

    And, where are my manners!?!? I failed to say this - Welcome to TFP!
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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    morzh's Avatar
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    Re: Substitute for chlorine tablets???

    never mind
    Seasonal World rectangular pool, 27K gallons (data sheet), 25.3K calculated
    Jandy Stealth JHPU 2.0 PUMP, 2HP
    Jandy CL340 cartridge filter
    Pentair C320 inline chlorinator
    AquaComfort heatpump heater

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    JoyfulNoise's Avatar
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    Re: Substitute for chlorine tablets???

    Quote Originally Posted by morzh View Post
    Splash,

    is this topic a reminder to read the Poolschool or do you have actual suggestions as to substitute? (would love if anyone knew of one).
    The only substitute method for water chlorination taught here is bleach/liquid chlorine. All forms of solid chlorine, either in powder form or in pucks, add unwanted chemicals to your water. All of the chlorinated cyanurate chemicals (dichlor and trichlor) add too much CYA over time and cal-hypo drives up the waters calcium hardness. Lithium hypochlorite is a solid form of chlorine that will not affect water chemistry (the lithium ion doesn't really do anything) BUT it is way too expensive to use on a regular basis for daily water chlorination. Chlorine gas is available in some areas by direct injection into the pool water but it has to be performed by a qualified and trained service company and you'll only get injections once per week which is an insufficient frequency for proper water sanitation.

    In short, the only reliable method for water chlorination is liquid chlorine or bleach.
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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    dhimpel's Avatar
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    Re: Substitute for chlorine tablets???

    Thanks for the feedback. Does anybody have a specific brand of bleach or liquid chlorine they use?? Also does anyone know how much is needed? I got my test kit ordered the other day. Got tired of using test strip and guessing what my levels were.

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    Texas Splash's Avatar
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    Re: Substitute for chlorine tablets???

    Many people will simply go to their local grocery store or Wal-Mart and get the generic (regular) bleach. It all boils-down to cost and percentage (strength). Most common bottle will be 8.25%, but regionally, some carriers may have 10 or 12%. As long as the active ingredient is Sodium Hypochlorite, and the batch is not too old, you're good to go.
    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!

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    Re: Substitute for chlorine tablets???

    For my SLAM, I used Great Value concentrated bleach (8.25%) from Walmart. Unscented, plain old bleach (i.e., not EZ-Pour, Splashless, etc.).

    I have now discovered that Atwood's sells 10% "Liquid Pool Shock" for $2.00 per gallon, or 4-gallon cases for $7.99. Takes less liquid to get where I need to be, and it's cheaper than the GV bleach I was using.
    25,000 gallon freeform gunnite/plaster, built in the 1970s/80s; Sta-Rite 9463004 575-lb. sand filter; Sta-Rite DuraGlas/Max-E-Glas (P2RA5F-125L) single-speed 1.5 HP pump, manufactured 12/1993 (1M93M).
    Helpful links: TFTestKits; Pool School; ABCs of Pool Water Chemistry; Chlorine/CYA Chart; PoolMath; SLAM - Shock Level And Maintain

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    JoyfulNoise's Avatar
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    Re: Substitute for chlorine tablets???

    Just be careful when purchasing liquid chlorine products and consider two things -

    1. Bleach degrades over time. The higher the concentration, the faster the rate of breakdown - see this post;

    2. Always check the date codes - how to read bleach date codes.

    Always store bleach in a cool, dark space (never outside in a shed in the heat and/or humidity).
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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