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Thread: bleach vs. chlorine

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    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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    OK:
    Here we go on the new board. Sodium Hypochlorite solution is generally all the same, varying only in concentration. Doesn't matter if it's called "Super Shock", "Regular Unscented Bleach", etc.

    1 gallon of whatever it's called will add its concentration to 10,000 gallons of water.

    So 1 gallon of regular unscented bleach, 5.25% concentration, adds 5.25ppm of Free Chlorine to 10,000 gallons. 1 gallon of 10% solution adds 10ppm, etc. So you can figure that if 1 gallon of 10.5% shock solution costs 3x as much as a gallon of regular bleach it's a bad deal. If it costs 1.5x as much, it's a good deal.

    I've gotten shock as high as 26% in 5 gallon carboys. This is really good when you open your pool and need to get you FC up and keep it up to fight off the winter's and spring's contamination and algae.

    BUT-----The higher concentrations break down--the higher it is, the faster it breaks down. Heat and light make it worse. Keeping it cool or cold and dark really helps.

    Bleach is chlorine, liquid chlorine, liquid shock (if it's sodium hypochlorite) is all the same thing. But watch out for pool store clerks. They'll try to tell you laundry bleach will ruin your pool. It's not true. Just stick to unscented, non-gelling bleach --either "regular" or "Ultra" and you'll be fine.

    We try to get people here to recognize that labels don't mean nuttin'. It's all about ingredients.

    Go to a pool store and "Alkalinity Increaser" can cost $3/lb. A 4lb bottle will cost $10-$12 dollars. This infuriates me because the ONLY ingredient is Sodium Bicarbonate--Baking soda. I've bought baking soda, you know, Arm&Hammer, at CostCo for $3.50 for a 12lb bag--at the pool store that 12lbs costs you $30 to $36!! And it's the same darn stuff!

    If you've fallen into this trap, I say you've been "Pool Stored!"
    Carl

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    PopcornGirl is offline ** No working email address ** Thread Analyst PopcornGirl 0
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    Ok, now I'm intrigued... I'm wondering if I should switch to bleach instead of chlorine granules?
    If I do, can someone give me the run-down (or point me to an article/instruction manual) of how to switch?
    What all is involved in becoming a "bleach pool?"
    Right now, I use 1-2 pounds of granular shock once per week (3 hours after adding acid as needed to correct my pH).
    During the week, I have a floater with 3-4 chlorine 3" tablets.
    My water is clear and I don't really have an algae problem (just stains -- see the thread on metal stains...).
    I must say, the bleach method sounds pretty simple (and cheaper!) and we can recycle empty bleach bottles here in Baton Rouge so that wouldn't be a problem...
    but I would want to RESEARCH THIS thoroughly and find out EXACTLY what I need to do before attempting to switch. I don't want any surprises!
    Thanks in advance,

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    CarlD's Avatar
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    Quote Originally Posted by PopcornGirl
    Ok, now I'm intrigued... I'm wondering if I should switch to bleach instead of chlorine granules?
    If I do, can someone give me the run-down (or point me to an article/instruction manual) of how to switch?
    What all is involved in becoming a "bleach pool?"
    Right now, I use 1-2 pounds of granular shock once per week (3 hours after adding acid as needed to correct my pH).
    During the week, I have a floater with 3-4 chlorine 3" tablets.
    My water is clear and I don't really have an algae problem (just stains -- see the thread on metal stains...).
    I must say, the bleach method sounds pretty simple (and cheaper!) and we can recycle empty bleach bottles here in Baton Rouge so that wouldn't be a problem...
    but I would want to RESEARCH THIS thoroughly and find out EXACTLY what I need to do before attempting to switch. I don't want any surprises!
    Thanks in advance,
    You are gonna LOVE the answer--NUTHIN'!
    That's right! Nothing. Just stop using the crystals and the floaters and just test your water and add bleach when you need chlorine. Remember: You aren't switching from chlorine to bleach, you are merely switching to another form of chlorination.

    But what you should do (and has nothing to do with bleach or tablets) is do a full sample test of your water and post it:
    FC (Free Chlorine)
    CC (Combined Chloramines)
    TC (Total Chlorine=FC + CC)
    pH
    TA (Total Alkalinity)
    CYA (Cyanuric acid, also called Stabilizer or Conditioner)
    and
    Ca (Calcium or Calcium Hardness).
    Volume of your pool
    Is it vinyl, fiberglass, or concrete/tile/gunite? (this matters).

    You can also have your pool store check for metals, particularly copper.

    I suspect your tablets are HTH brand "Dual Acting" which put unnecessary copper in your water (and give green staining and green blonde hair). It's terrible stuff (in my opinion) and I will never use it. I only use tri-chlor tabs under very particular conditions and only for a short time, but mostly just use bleach. Plus I will NEVER use tablets or anything containing copper.

    You can start using bleach tonight, even with floaters (but don't pour it on or near them). If you put the powdered chlorine (Di-Chlor) in the skimmer, do NOT pour the bleach in there. If you don't put anything in the skimmer, you can pour the bleach there.

    You are making it far more complicated than it is. Just add bleach when you need chlorine, instead of powders or tablets. That's really all there is to it. No preparation is needed.

    The pool stores and pool chemical industry is determined to convince you that it's complicated and that you need lots of expensive chemicals. You don't. But if you know that, they make a lot less money.

    Go to PoolSolutions.com and read the tips there. And believe them.
    Carl

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