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Thread: Shocking with Cal Hypo

  1. Back To Top    #1

    Join Date
    Jun 2011
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    Ridgefield, CT
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    Shocking with Cal Hypo

    Our pool opened to a green swamp, which was bad enough, but the CYA levels were very low, as were the calcium levels. I have gotten to brining the CYA up, but have not yet adjusted the calcium yet (I am more concerned with shocking the algae). Is there any reason why I shouldn't consider shocking with cal-hypo instead of bleach so that I can take advantage of the fringe benefit of raising the calcium hardness?

    Our calcium is around 110 right now and we have a gunnite pool. Last fall, we closed the pool with a calcium hardness of around 320.
    33,000 gallon plaster pool
    Jandy L-Series -CL580 Cartridge Filter

  2. Back To Top    #2
    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    37,879

    Re: Shocking with Cal Hypo

    Shocking with cal-hypo is just fine as long as it won't make your CH level too high. Given your current levels, there doesn't seem to be any chance of a problem.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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  3. Back To Top    #3

    Join Date
    Aug 2010
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    Re: Shocking with Cal Hypo

    I've done the same thing. It's a lot easier to carry, and if you need CH anyway, why not? You can use the bottom of Pool Calculator to estimate the effects of your CalHypo additions.
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
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  4. Back To Top    #4

    Join Date
    Jun 2011
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    Ridgefield, CT
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    Re: Shocking with Cal Hypo

    Quote Originally Posted by RobbieH
    I've done the same thing. It's a lot easier to carry, and if you need CH anyway, why not? You can use the bottom of Pool Calculator to estimate the effects of your CalHypo additions.
    Exactly. It also has a much smaller footprint in my garage. I did check the Pool Calculator. I am not sure the cal hypo will get me to where I need to be, but I guess I can now use the supplemental calcium booster that the prior owner left behind.
    33,000 gallon plaster pool
    Jandy L-Series -CL580 Cartridge Filter

  5. Back To Top    #5

    Join Date
    Aug 2010
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    Re: Shocking with Cal Hypo

    Exactly!
    Built in 1957 44,000 gallon in-ground, Wet Edge Primera Stone in Sky Blue, Intelliflo VF Pump, 600 lb. Pentair Triton II TR-100 Sand Filter, CircuPool RG 60 Plus SWG, TF-100 test kit
    If TFP has helped you, please click to SUPPORT TFP!

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