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Pool Chlorine

Pool chlorine and swimming pool care. Your pool water care and maintenance for the pool perfect for you.

Answers To Common Questions

Swimming Pool Care Instructions

Your swimming pool water chemistry must be met for your pool chlorine to work properly. In doing this you will:

  • Kill off any microorganisms

  • Protect your swimmers from waterborne illness and pathogens

  • Great for inground pool maintenance and above ground swimming pool maintenance

  • Protects your pool water filters and pool filter system

  • Killing algae and controlling all kinds of thing such as cloudy pool water, an algae swimming pool, green pool water, blue-green algae, pink algae, yellow algae, white water mold, etc...

  • Keeps your pool water balance in line and for general pool water care

  • Works as a swimming pool shock

  • It comes as pool chlorine tablets

  • Safe to use for super chlorination with your salt water pool systems and general salt water pool maintenance. Just be sure to turn off your salt cells (swimming pool chlorine generator) before you shock it.

  • May be purchased at places that carry wholesale pool chemicals or swimming pool supply and chemical stores

  • Use it at opening pool or at your swimming pool closing

  • Relatively low pool maintenance cost when used properly

  • Keeps the residual chlorine demand in check


    • The dangers of chlorine (chlorine safety) include:

  • Hazardous material spill

  • Chemical explosions

  • Swimming pool rash

  • Chlorine rash

  • May cause swimming pool stains if not added properly

  • Not considered a chemical free pool


    • Swimming pool chlorine is the most widely used and one of the more cost effective ways for disinfecting. Using this or another kind of sanitizer, like Bromine or a pool ionizer, is of the utmost importance in properly balancing your pool water chemistry.

    You should not add this sanitizer until your pool pH and pool alkalinity is correct. When your pH level is under 7.0 the chlorine becomes too active.

    If your pool pH is over 8.0, it becomes less than 25% active. A proper balance of pH and alkalinity using muriatic acid (pool acid) will ensure proper sanitizing.

    Chlorine Tabs, Granular Calcium Hypochlorite, & Liquid For Regular & Saltwater Pools


    Free Available Chlorine

    In the hot summer months your sanitizer can degrade rapidly. The sun will wreak havoc on your pool and for this reason any adjustments should be done in late afternoon or early evening hours.

    This allows enough time for it to go work immediately and start sanitizing your pool. It should be either broadcast (Calcium Hypochorite) or poured (Sodium Hypochlorite/ liquid) evenly, starting in the deep end and kept at 1.5ppm-3.5ppm.

    If you have an outdoor pool and you're using it up like crazy I would then encourage you to check your cyanuric acid (pool stabilizer) level. Too little and your pool chlorine will hit bottom, too much cyanuric acid and it can't do the job.

    One of the best ways to add cyanuric acid to you pool is with chlorine tablets. You'll want to keep this level between 30-50ppm, or about 7.5% of your free available chlorine.

    Example: Your level is 2.5ppm. Take 2.5 divided by 7.5% and you get 33. Keep your cyanuric acid level between 30-33ppm.

    Also, you'll want to do a residual demand test.

    If you have one of the many kinds of small swimming pools or kiddie pools, just a tiny bit is needed to keep them sanitized.

    Pool Water Test Kits - FAS-DPD K-2006 Taylor Test Kit


    Cyanuric Acid - Pool Stabilizer Chart

    Cyanuric Acid Minimum Chlorine ppm Goal Chlorine ppm
    20 1.5 2.5-3.0
    30 1.5 3.5-4.0
    40 2.5-3.0 4.5-5.0
    50 3.5-4.0 5.5-6.0
    60 4.5-5.0 6.5-7.0
    70 4.5-5.0 7.5-8.0
    80 5.5-6.0 8.5-9.0
    90 6.5-7.0 9.5-10

    By keeping an eye on your cyanuric acid level, your sanitizer will do it's job properly and you may not need any extra swimming pool chemicals.

    Remember when making any adjustments always have safety in mind.

  • Always take the proper precaution with any kind of swimming pool chemical. Remember to read the manufacture’s labels.

  • Always turn off your salt water generator before doing a swimming pool shock

  • Use heavy duty rubber gloves and goggles and keep all chemicals out of reach of children and pets. Again, I recommend using granular Calcium Hypochlorite. It’s easier, a bit safer, lighter in weight, easier to store, and 1 pound of granular equals 1 gallon (8lbs.) of liquid.

    • Remember that salt water swimming pools are not considered chlorine free pools. They still produce hypochlorous acid (chlorine generator pool).

    A pool ionizer would be considered "chlorine free pool chemicals".

    A good salt pool chlorine generator will still give you great swimming pool care and maintenance.


    Go To:

    Swimming Pool Chemistry From Pool Chlorine
    Adjust Your Swimming Pool Chlorine
    Link To Top



    What Other Visitors Have Said

    Click below to see contributions from other visitors to this page...

    Why Is The Chlorine Gone Overnight  Not rated yet
    I am new to pool maintenance.

    I have shocked my pool multiple times in the last week.

    My pool was dark green and now it is a very light milky green....

    Can I Have Too Many People Swimming  Not rated yet
    We have a home pool 33'x 12'and 6' deep.

    In the summer (May through Sept) there are usually 5 people swimminmg daily and 7 to 9 people on the weekends....

    How Do I Bring The Chlorine Level Down In A Salt Water Pool?  Not rated yet
    We have an 18 x 36 , 25K gallon salt water swimming pool.

    Our installer didn't explain throughly what or how to bring our chlorine level down if it ...

    Having Difficulty With No Free Chorine..  Not rated yet
    I have a OVAL 12X 24 = 8334 GALLONS = 7372 CAPACITY pool.

    Since July 8, I have been trying to tame this monster.

    The water looks crispy clean ...

    Can't Get Chlorine Levels Down In Pool..High Chlorine  Not rated yet
    I can not seem to get the chlorine level down in my in ground pool now going on two weeks.

    It remains at 10.00 when I test it.

    I took a sample ...

    No Free Or Total Chlorine In The Pool!  Not rated yet
    I have shocked it a million times.

    This is my summer owning a pool.

    We have an inground with a liner. I am at the pool store 2x a week and am ...

    What's The Best Way To Add Calcium Hypochlorite..Swimming Pool Chlorine  Not rated yet
    I have an above ground vinyl pool and recently bought 40 lbs of calcium hypochlorite powder.

    What is the best way of getting it in the pool?

    I was ...

    How Long After Adding Pool Chlorine Is It Safe To Swim..How Soon  Not rated yet
    How long after adding chlorine to our swimming pool is safe to swim?



    Thanks for your question Michelle

    It's not about a time question, but ...

    How To Lower CYA (Cyanuric Acid)  Not rated yet
    What is the best way to lower the cyanuric acid level in my swimming pool?

    I think it's a little high but I wanted to know what you thought.



    Thanks ...

    How Long After Shocking Can I Swim..Swimming Pool Chlorine  Not rated yet
    How long do I have to wait after shocking a pool so you can get in?



    Thanks for the question Carlos

    It's really not a matter of time, but when ...

    Can Pool Chlorine Harm My Hair & Darken My Skin..Swimming Pool  Not rated yet
    Yesterday I went to swim after almost 1 year.

    After I got up...took my shower and found my hair to be rougher than usual.

    My hair is usually quite ...

    Can I Go Swimming In A Chlorine Swimming Pool While Pregnant?  Not rated yet
    Is it safe to swim in a swimming pool with chlorine while I'm pregnant?

    I'm 20 weeks going on 21 this Saturday and I live in Arizona.

    It's really ...

    Should I Always Shower & Wash Hair/Skin After Swimming...Chlorine Pool  Not rated yet
    We went swimming last night and there were so many people at my house I was too tired to shower and wash my hair.

    What will happen to my skin?

    Can ...

    Swim In A Chlorine Pool & My Hair & Skin...What Effect??  Not rated yet
    Does swimming in a swimming pool(chlorine)and not showering afterward have any effect on my hair and skin?

    I really don't want frizzy hair or dried ...

    Will My Hair Change Color If I Swim In A Chlorine Swimming Pool..Different  Not rated yet
    I just dyed my hair (it looks so cute) this week and I really want to go swimming but I don't know what to do.

    My friend said not to go swimming because ...

    Swimming Pool Question..Chlorine Is Low..pH Level Is High?  Not rated yet
    I just got my swimming pool completely filled up this morning put a chlorine tablet in the floater.

    I tested the pool water with test strips a couple ...

    Swimming Pool Chlorine: Does It Raise The pH Level?  Not rated yet
    Does swimming pool chlorine affect the pH level?

    Adding an excess amount of chlorine increase the pH?

    Some people only use a combination of muriatic ...

    Grocery Store Bleach/Clorox Instead Of Pool Chlorine?  Not rated yet
    Can I just add bleach or Clorox to my pool instead of pool chlorine and buying expensive pool chemicals?

    I've heard that it's the same stuff but other ...

    Low Pool Chlorine & Stabilizer  Not rated yet
    About low swimming pool chlorine level, stabilizer, and cyanuric acid...

    My pool is 27,000 gallons. The pH level is good and the swimming pool is very ...

    How Long Do I Need To Wait Before Swimming After Adding Swimming Pool Chemicals?  Not rated yet
    Question

    How long do I need to wait before swimming after adding swimming pool chemicals after each of the following:

    1. total alkalinity and ...

    Kind Of Swimming Pool Chlorine To Use  Not rated yet
    I have a question about swimming pool chlorine.

    I know there's a couple different ones out there but which one is the best to use, the liquid or granules?...

    Lower the Cyanuric Acid (CYA)  Not rated yet
    I have a question about cyanuric acid (CYA)?

    How do you lower it if it becomes too high?



    Good question Mike

    There has been much debate on ...

    Difference of Calcium Hypochlorite & Sodium Dichlorite Triazinertrione?  Not rated yet
    What is calcium hypochlorite?

    What is sodium dichlorite triazinertrione?

    Can both be used in an inground pool?

    Thanks for your questions Yvonne
    ...


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