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Thread: New Non-stabilized chlorine tablets

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    New Non-stabilized chlorine tablets

    I recently saw non-stabilized chlorine tablets at my local pool shop. They contain Calcium Hypochlorite but no stabilizer. They are supposed to go in the skimmer and not floaters because water has to run over them. I am wondering if anyone has tried them or have any information about them. Obviously being in the skimmers makes emptying the skimmers more difficult. But it would be handy if they worked.
    Kathyo in Texas
    21k gallon IG gunite w/ spa & waterfall; Waterway filter 817-0106; Polaris 280 cleaner

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    Join Date
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    Re: New Non-stabilized chlorine tablets

    Cal Hypo adds Calcium instead of CYA. If your calcium is low then they are ok to use, until they aren't.
    13k Gallon IG Pebble w/ attached Spa, AquaRite T-Cell-15 SWG, Hayward DE6020 Filter, Hayward 2 HP Pump, Hayward 400k Heater, TF-100 Kit, Pool Logger

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    Re: New Non-stabilized chlorine tablets

    Are they the Poolife NST, or another brand?

    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter. Dual speed 1 HP pump, Hayward S210T sand filter
    Pool School - PoolMath

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    JoyfulNoise's Avatar
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    Re: New Non-stabilized chlorine tablets

    Cal hypo tablets are not new; they have been around for a while. The problem with cal-hypo is that it cannot be easily pressed into a tablet form as it just tends to crumble apart. So the old style tablets used a polymeric binder material that would leave behind a very messy and sticky goop after all the cal hypo dissolved. The goop was very hard to clean up and it would invariably plug up the feeder systems that used them.

    Perhaps these new tablets use a different type of binder. Either way, they are going to add calcium to the water (for folks like me in the desert southwest, that's a non-starter) and whatever solid material left over from the binder. Assuming whatever is used as a binder is ok with your filter type and that you can afford to add calcium to your water, then I see no problem with them. However, CH will need to be measured more frequently so that the pool water CSI remains in a favorable range.
    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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    Re: New Non-stabilized chlorine tablets

    Yes - they are Poolife NST tablets.

    I'll have to check my calcium, but it looks like I'll stick to basic bleach and use normal floaters when I'm on vacation.

    Thanks to everyone for your help.
    Kathyo in Texas
    21k gallon IG gunite w/ spa & waterfall; Waterway filter 817-0106; Polaris 280 cleaner

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    Re: New Non-stabilized chlorine tablets

    Those tablets are new this year, I have been looking to get some to check out but prices online are a bit high at the moment. They are supposed to be better built than previous cal-hypo tablets so don't need a special feeder or leave a mess. Since cal-hypo isn't nearly as acidic as trichlor they won't be nearly as much of a problem to keep in the skimmer. Just like trichlor tablets, nothing wrong with using them if you understand what they will add to your water.

    BUT, as always NEVER allow trichlor and cal-hypo to come in direct contact with each other. The reaction is unpleasant.
    JD - 28' Round Above Ground Pool, 17,000 Gallons. Dual speed Jacuzzi pump with cartridge filter. Dual speed 1 HP pump, Hayward S210T sand filter
    Pool School - PoolMath

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    wjr75's Avatar
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    Re: New Non-stabilized chlorine tablets

    This is interesting. Does anyone know how much calcium is added per 3" tab? I usually have my pool drained and power washed in the spring and after filling I need to add about 10lbs of calcium up to get around 250ppm. I'm interested in the future reviews of this.
    Inground 22k gallon gunite 15x31 main pool, 15x7 wading pool/sunning deck, hot tub/with overflow (9' octagon with limestone top) & slide NSWG, Aqua Blue Pebble Sheen
    Filter dual cartridge Sta-rite 450sq/ft, TF-100 Test Kit
    Heater Raypak 2100 400k btu cupro-nickel exchanger
    Auto pool cover, Polaris 280 auto pool cleaner, Jandy AqualinkRS8 Remote Control System

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    Re: New Non-stabilized chlorine tablets

    Quote Originally Posted by Donldson View Post
    Those tablets are new this year, I have been looking to get some to check out but prices online are a bit high at the moment. They are supposed to be better built than previous cal-hypo tablets so don't need a special feeder or leave a mess. Since cal-hypo isn't nearly as acidic as trichlor they won't be nearly as much of a problem to keep in the skimmer. Just like trichlor tablets, nothing wrong with using them if you understand what they will add to your water.

    BUT, as always NEVER allow trichlor and cal-hypo to come in direct contact with each other. The reaction is unpleasant.
    I am thinking of trying them. Did not like the old ones I tried a few years back, did not dissolve good.
    Anyway would I have a problem.
    Right now I use a combination of bleach and just one puck with the CYA a week.
    Do I have to worry about the bleach in contact with these new pucks
    Could I still also use the other pucks in a separate floating dispenser when I can afford to add cya?
    thanks
    6014 gallons aprx
    cartridge type filter
    summer escapes pool above ground metal frame
    SFS1000 SkimmerPlus filter pump with GFCI=1,500 GPH
    install date: 6-1-12

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