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  1. #1
    Join Date
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    Default Re: 1st year SWG help

    Well, you will have to shock your pool to get rid of the combined chlorine. The difference between Free and Total Chlorine is Combined. To shock it, you will need to add enough chlorine to introduce 10 times your combined chlorine level. In this case, you have 1.95 ppm Combined (although I'm not sure how one can test 0.05 ppm chlorine, are you sure this isn't 0.5 ppm?), so you'll have to introduce 19.5 ppm (or 15 ppm, depending on where that decimal should be) of chlorine.
    There's a bleach calculator on here somewhere, that tells you how much of whichever form of chlorine you want to use.
    With a Salt Chlorine Generator, I would normally recommend using Granular Tri-chlor as it is lower in pH and has Cyanuric Acid. In your case, you don't need any more cya.
    You didn't mention your calcium hardness level, so that would determine if you should use Cal Hypo to shock. If you're higher than 350 ppm Cal Hardness, avoid using Cal Hypo.
    So, that leaves bleach. Its higher in pH so expect to use acid to bring the pH back down afterward.
    Sean Assam
    Commercial Product Sales Manager - AquaCal AutoPilot Inc. Mobile: 954-325-3859
    e-mail: sean@teamhorner.com --- www.autopilot.com - www.aquacal.com

  2. #2
    CarlD's Avatar
    CarlD is offline SuperMod Emeritus Vortex Adjuster CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars
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    Default Re: 1st year SWG help

    Sean's right, of course. You need to shock it up with bleach or liquid chlorine. Don't worry, bleach is compatible with SWGs--the "inert ingredients" is mostly salt water.

    The SWGs don't seem to be anywhere close to adequate for a full-scale algae war. But don't blame the SWG. Once your water is clear it should keep it sparkling again.
    Carl

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