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Thread: Liquid chlorine vs 70% cal-hypo granules: cost comparisons Quebec/Canada

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    Join Date
    May 2015
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    Quebec, QC
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    35

    Liquid chlorine vs 70% cal-hypo granules: cost comparisons Quebec/Canada

    Calculations with 'end of season best prices' are as follows:

    Cal-hypo (70%) granules are 55$ for 18 kg or 3$/kg. Correcting for 70% (100/70 x 3$/ kg) = 4.36$/kg.
    Liquid chlorine bleach is 5.99$ for a 5 L jug at 10.8%, which works out to (108/1000 x 5 = 0.540 kg/6$) =11$/kg. So, since liquid chlorine bleach does not require a solids dissolution, it is great at startup, but cal-hypo is more economical for routine use in balanced seasonal pools.
    14 x 28 Jacuzzi vinyl inground pool, Jacuzzi Laser 250 sand filter, Hayward 1 HP pump.

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    Aug 2014
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    Shallotte, NC
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    Re: Liquid chlorine vs 70% cal-hypo granules: cost comparisons Quebec/Canada

    Re-Cal-Hypo: Did you factor in the water (and additional chemicals to treat replacement water) that you will need to periodically dump to waste to avoid astronomical calcium numbers?

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    Join Date
    May 2015
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    Quebec, QC
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    Re: Liquid chlorine vs 70% cal-hypo granules: cost comparisons Quebec/Canada

    High calcium is a non-issue due to autumnal drawdown and 50% replacement by dilute ice/snowmelt.
    14 x 28 Jacuzzi vinyl inground pool, Jacuzzi Laser 250 sand filter, Hayward 1 HP pump.

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    San Rafael, CA USA
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    Re: Liquid chlorine vs 70% cal-hypo granules: cost comparisons Quebec/Canada

    Yes, even selective use of Trichlor would work if you proportionally raise the FC level as the CYA level climbs. Having shorter seasons and significant annual water replacements opens up the options one has to managing a pool with various chlorine sources. In terms of side effect buildup, for every 10 ppm FC the 16 ppm salt from chlorinating liquid or bleach is the least problematic, the 7 ppm CH from Cal-Hypo is next, and the 6 ppm CYA is worst, but depending on the amount of usage and water dilution any of these could be manageable depending on the specific situation.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

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