Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 14 of 14

Thread: How much Bleach

  1. Back To Top    #1

    How much Bleach

    my chlorine level was not reading at all. i put in 3 gallons of bleach last night but still no chlorine on the tester.. its a 24 ft round above ground pool

  2. Back To Top    #2
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    Location
    East Texas
    Posts
    8,995

    Re: How much Bleach

    Do you have any other chemical readings you can post for us? How are you testing? What does your water look like? Welcome to the forum.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
    Pool Rover Jr., Pool Blaster Max, Diver Dave TF100 Test Kit/Speed Stir
    Margaritaville Frozen Concoction Maker, Liqour Chiller, & Drink Mixer & Party Tub----Collect 'um all!

  3. Back To Top    #3

    Join Date
    Feb 2008
    Location
    Denton, TX
    Posts
    5,061

    Re: How much Bleach

    Welcome to TFP!

    Have you gotten yourself a good test kit yet? A TF-100 or Taylor K-2006 are what you want.

    We need test results for FC, CC, pH, TA, and CYA. My guess is that you either have no CYA and are losing all of your FC to the sun or you are fighting the beginnings of an algae bloom.

    Test kit is important. Please get one of the above kits from tftestkits.net.

  4. Back To Top    #4

    Re: How much Bleach

    ph is low on the tester. chlorine doesnt even register. im in texas and yes i know sunlight is eating it up. i have no trees etc around.

  5. Back To Top    #5

    Re: How much Bleach

    its really about the money, if i go buy EZ pool you dont even have to put anything else in it. EZ pool is very exspensive.. so im trying to do it the cheap way.

  6. Back To Top    #6

    Re: How much Bleach

    Quote Originally Posted by 257WbyMag
    Welcome to TFP!

    Have you gotten yourself a good test kit yet? A TF-100 or Taylor K-2006 are what you want.

    We need test results for FC, CC, pH, TA, and CYA. My guess is that you either have no CYA and are losing all of your FC to the sun or you are fighting the beginnings of an algae bloom.

    Test kit is important. Please get one of the above kits from tftestkits.net.


    i have strips and a walmart drop text kit

  7. Back To Top    #7

    Re: How much Bleach

    pic
    Attached Images Attached Images

  8. Back To Top    #8

    Join Date
    Feb 2008
    Location
    Denton, TX
    Posts
    5,061

    Re: How much Bleach

    The WM drop kit is ok for standby use. You will need one of the recommended test kits though. Strips are of no use and you need to be able to test for FC levels above 5 ppm. The only way to test for levels >5 ppm is to use a FAS-DPD test. A standard DPD test is not sufficient.

    When you have the time, sit back and read some of the posts that we get when people initially sign up here and need help. 99% of chemistry problems here are problems because of less than accurate testing or pool store testing. Next to water, a high quality test kit is the next most important part of having a pool. It is the one component where you really cannot cut corners and still be ok.

  9. Back To Top    #9

    Re: How much Bleach

    Quote Originally Posted by 257WbyMag
    The WM drop kit is ok for standby use. You will need one of the recommended test kits though. Strips are of no use and you need to be able to test for FC levels above 5 ppm. The only way to test for levels >5 ppm is to use a FAS-DPD test. A standard DPD test is not sufficient.

    When you have the time, sit back and read some of the posts that we get when people initially sign up here and need help. 99% of chemistry problems here are problems because of less than accurate testing or pool store testing. Next to water, a high quality test kit is the next most important part of having a pool. It is the one component where you really cannot cut corners and still be ok.

    so how much bleach will help out. i added 3 gallons last night

  10. Back To Top    #10

    Join Date
    Feb 2008
    Location
    Denton, TX
    Posts
    5,061

    Re: How much Bleach

    Quote Originally Posted by akilgore
    so how much bleach will help out. i added 3 gallons last night
    I don't know. It depends on your CYA and the conditions in your water. In order to know what your shock level for chlorine is, your CYA must be known. This is why we need all of those test results that I mentioned in my first post.

  11. Back To Top    #11

    Re: How much Bleach

    Quote Originally Posted by 257WbyMag
    Quote Originally Posted by akilgore
    so how much bleach will help out. i added 3 gallons last night
    I don't know. It depends on your CYA and the conditions in your water. In order to know what your shock level for chlorine is, your CYA must be known. This is why we need all of those test results that I mentioned in my first post.

    tested cl level and it didnt show up any

  12. Back To Top    #12

    Join Date
    Feb 2008
    Location
    Denton, TX
    Posts
    5,061

    Re: How much Bleach

    What is your CYA?

  13. Back To Top    #13
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: How much Bleach

    How much bleach depends on how high the CYA is.

    If you want someone to just tell you "go dump this much in," go to the pool store. They'll be happy to take your money and order you around. We try to teach you how to do things yourself.

    Once you have some test results, it's easy to see what the target FC should be, and pool calculator will crunch the numbers and tell you to the ounce how much bleach to add.

    But until you answer 257WbyMag's question, we can't give you an answer. You can keep asking, but we can't give you an answer. We can't even help you figure it out for yourself without test results.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  14. Back To Top    #14

    Join Date
    Mar 2007
    Location
    San Rafael, CA USA
    Posts
    12,082

    Re: How much Bleach

    Pool stores will tell you that the Free Chlorine (FC) level in the pool is the same thing as the active chlorine level that kills algae, but that is simply not true. That's why everyone here is asking you to test your Cyanuric Acid (CYA) level. This is because the amount of active chlorine that actually kills algae is dependent not solely on the FC level, but on the CYA level as well -- more precisely on the FC/CYA ratio. The Pool School article (see the Pool School button on the upper right section of every webpage on this site) Chlorine / CYA Chart shows you how much FC is required at each CYA level. It shows you how much is needed as a minimum for maintenance to prevent algae growth and it tells you the higher shock FC level needed to kill algae that is already established (either visible or resulting in an overnight FC drop). Once you know your current FC and target FC (based on the chlorine / CYA chart "shock FC" level), then you can use The Pool Calculator to calculate the actual dosage for the size of your pool.

    Sure, you could waste your time and money just dumping in some chlorine and maybe it will be enough at first, or maybe it won't, but that's a scattershot approach with a low probability of success. What we teach here is a methodical and consistent method of treatment where you add enough chlorine to maintain a high shock FC level to relatively quickly kill off existing algae. You keep adding chlorine to maintain the higher FC level and at first that may mean several times during the day because at first the chlorine is killing a lot of algae. As time goes on, the algae is killed and the amount of chlorine loss lessens so you don't need to add it as quickly. When the pool is cleared and you aren't measuring other evidence of needing high chlorine, then you lower your target FC level back to at least the minimum in the chart. This is all described in more detail in the Pool School articles Defeating Algae and The Shock Process.

    If you then consistently maintain a minimum FC level relative to the CYA level, then you will not only not get algae, but you probably will never need to shock again except perhaps upon opening your pool if you let it go over the winter.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •