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Thread: Bleach vs. liquid chlorine?

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    Bleach vs. liquid chlorine?

    I have been here for two years so far (love this website!) The past two years I have used liquid chlorine, but I know bleach is also recommended for FC. I have never used bleach before and we are opening the pool tomorrow. I have no liquid chlorine at the moment and have to run out tonight in a pinch to get some but all pool stores are closed. I am thinking of trying the bleach this year instead of liquid chlorine. (For some reason I have been scared to pour straight bleach in but it is identical to liquid chlorine, is that right?) Anyway, what do I get? I'll be going to Wal-Mart. Just Chlorox bleach? Do I need to look for anything in particular? I'll be using the calculator to calculate when the time comes but I assume I'll need more bleach than I did when I used liquid chlorine. Just trying to figure out how many bottles I need.

    Also, is it okay to intermix the two if need be? Say if I start chlorinating with bleach and then switch to liquid chlorine or vice versa, or even if I use both in the same day, is that ok?

    Thanks so much guys!
    7+ years, inground, 25,000 gallon, vinyl, sand filter.

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    Mod Squad tim5055's Avatar
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    Re: Bleach vs. liquid chlorine?

    Quote Originally Posted by suziequsie2945 View Post
    Also, is it okay to intermix the two if need be? Say if I start chlorinating with bleach and then switch to liquid chlorine or vice versa, or even if I use both in the same day, is that ok?

    Thanks so much guys!
    The only difference is the % in the solution. Bleach is actually weaker than what you have been using. But in the end they are all chlorine in a liquid form. Some just have extra water in the solution.....
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: Bleach vs. liquid chlorine?

    So good ole Chlorox it is!

    - - - Updated - - -

    Do you find any difference between the two when using them in the pool? And since they are the same, I assume I can intermix? I see the Chlorox is half the strength.
    7+ years, inground, 25,000 gallon, vinyl, sand filter.

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    Re: Bleach vs. liquid chlorine?

    Quote Originally Posted by suziequsie2945 View Post
    So good ole Chlorox it is!

    - - - Updated - - -

    Do you find any difference between the two when using them in the pool? And since they are the same, I assume I can intermix?
    Yes, intermix away. No difference. And, no need for the name brand stuff. WalMart Great Value is much less expensive than the name brand Clorox. Just look on the side and verify the %
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: Bleach vs. liquid chlorine?

    Awesome! Thanks! Wish me luck with my opening and I'm sure I'll be back - LOL!
    7+ years, inground, 25,000 gallon, vinyl, sand filter.

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    Re: Bleach vs. liquid chlorine?

    Quote Originally Posted by suziequsie2945 View Post
    Awesome! Thanks! Wish me luck with my opening and I'm sure I'll be back - LOL!
    Good luck then - we will be here!
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: Bleach vs. liquid chlorine?

    Just make sure the bleach is NOT splash-less, outdoor, scented, etc. since these add things you don't want in your pool like thickeners that will foam.
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    Re: Bleach vs. liquid chlorine?

    I buy Kroger brand concentrated bleach at the grocery store. Easy enough to toss a few in the basket when they are on sale. 8.25%. Liquid chlorine is usually 10% or 12%, exact same ingredients.
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    Re: Bleach vs. liquid chlorine?

    Quote Originally Posted by chem geek View Post
    Just make sure the bleach is NOT splash-less, outdoor, scented, etc. since these add things you don't want in your pool like thickeners that will foam.
    I just saw this post this morning after I bought 20 bottles of bleach! I just checked and all it says is "regular scent." Anyone know what that means, and is it okay to use that today? That's all I have on hand and I'd like to get some FC in the pool ASAP!
    7+ years, inground, 25,000 gallon, vinyl, sand filter.

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    Re: Bleach vs. liquid chlorine?

    What brand?
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: Bleach vs. liquid chlorine?

    Regular scent is probably fine. I take "regular" to mean unscented... unless someone knows what "regular" smells like?
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    Re: Bleach vs. liquid chlorine?

    Quote Originally Posted by tim5055 View Post
    What brand?
    The Rite Aid Home brand.

    - - - Updated - - -

    Quote Originally Posted by JVTrain View Post
    Regular scent is probably fine. I take "regular" to mean unscented... unless someone knows what "regular" smells like?
    I was thinking the same thing. IF it's not okay, what will my pool look like? Foamy? This way I can gauge whether it's adding other unnecessary stuff to the pool.

    It's 8.25% and the rest is "other ingredients." It does indicate no phosphorus.
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    Re: Bleach vs. liquid chlorine?

    Quote Originally Posted by suziequsie2945 View Post
    The Rite Aid Home brand.
    I was thinking the same thing. IF it's not okay, what will my pool look like? Foamy?

    It's 8.25% and the rest is "other ingredients." It does indicate no phosphorus.
    You are good to go. The MSDS sheet on it lists two ingredients

    Sodium Hypochlorite

    Sodium Hydroxide

    This is normal bleach.

    And to answer your question, yes the splash-less will cause foaming. Almost all of us have grabbed a bottle at least once in the past.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: Bleach vs. liquid chlorine?

    Quote Originally Posted by tim5055 View Post
    You are good to go. The MSDS sheet on it lists two ingredients

    Sodium Hypochlorite

    Sodium Hydroxide

    This is normal bleach.

    And to answer your question, yes the splash-less will cause foaming. Almost all of us have grabbed a bottle at least once in the past.
    Thank you for looking that up! Good news I couldn't imagine returning 20 bottles back to Rite Aid - LOL
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    Re: Bleach vs. liquid chlorine?

    Sodium Hydroxide, aka caustic soda, is often used as a stabilizer in bottled bleach.

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    Re: Bleach vs. liquid chlorine?

    Bleach is made by passing electrical current through NaOH, so it will inherently contain it as part of it's makeup.
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    Re: Bleach vs. liquid chlorine?

    Quote Originally Posted by Patrick_B View Post
    Bleach is made by passing electrical current through NaOH, so it will inherently contain it as part of it's makeup.
    Yep, forgot that.

    Is IS often added though. Hypochlorite likes it alot.

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    Re: Bleach vs. liquid chlorine?

    I did not know that. My industry uses big volumes at such high rates, there is no point in doing that. Interesting.
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    Re: Bleach vs. liquid chlorine?

    If you do not leave some excess lye (sodium hydroxide) in making bleach, then the pH will be lower and the bleach will degrade more quickly. So a small amount is left in. In high-quality 12.5% chlorinating liquid, there's around 0.25% lye and the pH is around 12.5 (with no excess lye, the pH would be around 10.6).

    As for fragrance, that won't cause foaming. It's the thickeners that cause foaming. The fragrance probably doesn't do a lot of harm, but we like to avoid adding anything extra to the pool just in case. It sounds like regular scent is unscented -- it's the regular clean bleach smell.
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    Re: Bleach vs. liquid chlorine?

    I see... It makes perfect sense.
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