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Thread: Black stuff at bottom of chlorine bottle

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    jbriggs1219's Avatar
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    Black stuff at bottom of chlorine bottle

    So I've been buying my liquid chlorine at pool store because it's 12.5% and a good price....never had a problem until the last case I bought...noticed chlorine didn't seem quite as yellow and when I looked in bottle saw this kind of black silty looking stuff on bottom....Any idea what it is? All four bottles in case were like this....did I get a bad batch?..was it stored improperly?...thanks for any input

    13,500 gallon AG
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    Raypak Natural Gas Heater

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    Mod Squad YippeeSkippy's Avatar
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    Re: Black stuff at bottom of chlorine bottle

    Did they come with a date stamp? That's the production date written like 2015165 for the 165th day of 2015. It may very well be old or degraded.
    My Amazon Smile for November12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
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    jbriggs1219's Avatar
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    Re: Black stuff at bottom of chlorine bottle

    Unfortunately not...nothing on case or bottles

    13,500 gallon AG
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    Mod Squad zea3's Avatar
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    Re: Black stuff at bottom of chlorine bottle

    The best way to tell if it is any good or not is to test the water, add enough to bump up the FC about 5ppm, and then test again in about 15 minutes and see if the FC is where you would expect it to be. If it doesn't rise enough or at all then the batch is bad.
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    jbriggs1219's Avatar
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    Re: Black stuff at bottom of chlorine bottle

    Thanks for the responses...Will give it a try

    13,500 gallon AG
    Cartridge Filter
    Raypak Natural Gas Heater

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    jbriggs1219's Avatar
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    Re: Black stuff at bottom of chlorine bottle

    Only went up half as much as it should...waited an hour...almost no Sun here today and had cover on

    13,500 gallon AG
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    Raypak Natural Gas Heater

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    Mod Squad YippeeSkippy's Avatar
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    Re: Black stuff at bottom of chlorine bottle

    Quote Originally Posted by jbriggs1219 View Post
    Only went up half as much as it should...waited an hour...almost no Sun here today and had cover on

    Sent from my HTC6525LVW using Tapatalk
    Well that sucks
    I'm always worrying about folks buying discounted or low strength bleach and even your 12.5% was a waste. Any chance of returning to the store and complaining? Maybe a refund??? I dunno....?
    My Amazon Smile for November12K Fiberglass IG, Infinity 4000 automatic cover, SWCG, Hayward Sand Filter, Hayward 1.5 Pump, Doheny Discovery Robot, Savi Melody LED pool lights, outdoor speakers and other assorted doo-dads. Sundance Altamar Hot Tub.
    Our pool build--> Our Pool Solved Our Sloping Yard Skippy's Cheap Pool Cooler -->Skippy's New Fountain

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    jbriggs1219's Avatar
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    Re: Black stuff at bottom of chlorine bottle

    Oh definitely taking it back....Only reason I go to the pool store is for the 12.5%...never had a problem before....but this year they're keeping all the liquid in the back of store instead of out front....eventually they'll probably stop selling it altogether

    13,500 gallon AG
    Cartridge Filter
    Raypak Natural Gas Heater

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