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Thread: Switching from Chlorine Tabs to Bleach

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    Join Date
    Aug 2016
    Location
    HICKSVILLE, NY
    Posts
    87

    Switching from Chlorine Tabs to Bleach

    This is my current status:
    FCL: 3.58
    TCL: 3.58
    PH: 7.6
    ALK: 118
    CH: 260
    CYA: 116
    ============
    I'm looking to switch from buying pool store chemicals to the TFPC method. How do I use the bleach? How do I calculate the "dosage" and the frequency...how to I introduce it? Can I just pour it into my in-line chlorinator? Using the Tri-Chlor tabs was easy...just throw 5 or 6 tabs into the chlorinator every few days and I'm done. The only problem is that it's expensive, and it has been pushing up the CYA.
    28,000 gallons, 18x36, vinyl liner
    Hayward C4030 Cartridge Filter, Hayward TriStar VS 900 Pump, Raypak 400 BTU gas heater,
    Stenner 45mhp10 Peristaltic Pump (for bleach injection)
    2 skimmers, 2 returns, main drain, Lamotte ColorQ and TF-100 test kits

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    TFP Guide
    Mr Bruce's Avatar
    Join Date
    Mar 2014
    Location
    Greenville, SC
    Posts
    1,798

    Re: Switching from Chlorine Tabs to Bleach

    Hi and welcome to TFP. Awesome you have your location and signature already filled out, that's great.

    Step 1 is a good test kit. Either the Taylor 2006 or TF-100 (link in sig). I promise you won't be disappointed with a TF-100, I am on my 3rd season with it and can't imagine keeping the pool clear without it.

    While you are waiting on your test kit here are some links to get started:
    Pool School - ABCs of Pool Water Chemistry
    Pool School - Getting Started
    32K gallon Plaster - 1hp Hayward 2 speed Super Pump - Hayward S200 Sand Filter - TF100XL
    Test Kits - Pool Math - Chlorine/CYA/Target/Slam Chart

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    Join Date
    Jul 2012
    Location
    Winter Haven, FL
    Posts
    103

    Re: Switching from Chlorine Tabs to Bleach

    You're in the same boat as me. I used Trichlor tabs and now my CYA is 100. I am doing a 50% pool drain this weekend to lower my CYA. If you don't lower it, you may be constantly fighting to keep enough chlorine in. I am aiming to get my CYA down to 50.

    I normally put bleach right in front of my jet aiming into the deep end. Others may do it differently, but I believe that is the best way. It will all circulate anyways as long as your pool pump is doing its job.
    16x32 27k gal oval gunite pool, 24-inch Hayward sand filter, 1HP pump

  4. Back To Top    #4

    Join Date
    Jul 2014
    Location
    Hope Mills, NC
    Posts
    555

    Re: Switching from Chlorine Tabs to Bleach

    Test results to 2 decimal places are a joke. I can almost guarantee that they are way wrong.

    First and foremost, TFP method is all about frequent and reliable testing of your pool water so you can determine if and when "stuff" is to be added. Without reliable test numbers, there is very little that you can do.

    That is why me and other posters will request that you get one of the 2 recommended test kits before we can really help you. Personally, I'd opt for the TH-100 with the speed stir option, but it does cost more than the Taylor kit.

    Once you get the test kit and good numbers, everyone on this site will help any way they can.
    16 x 32 17500 gallons
    Vinyl in-ground
    Hayward 250# Sand Filter
    1 HP Pump
    Hayward SWG

  5. Back To Top    #5

    Join Date
    Aug 2016
    Location
    HICKSVILLE, NY
    Posts
    87

    Re: Switching from Chlorine Tabs to Bleach

    Hello Mr Bruce. Thankyou for your reply. I had been using the Taylor 2006-K test kit for the last several years. I recently "moved up" to the Lamotte ColorQ Pro 11. It appears to give a greater degree of accuracy provided you follow the instructions to the letter. It's also less cumbersome to use.
    =
    So I'm fairly confident in my readings. That CYA number has been troubling me and it has been the impetus behind my making the switch to bleach. Is there a video or a thread on this forum that would be helpful to someone with my pool profile?
    28,000 gallons, 18x36, vinyl liner
    Hayward C4030 Cartridge Filter, Hayward TriStar VS 900 Pump, Raypak 400 BTU gas heater,
    Stenner 45mhp10 Peristaltic Pump (for bleach injection)
    2 skimmers, 2 returns, main drain, Lamotte ColorQ and TF-100 test kits

  6. Back To Top    #6

    Join Date
    Aug 2016
    Location
    HICKSVILLE, NY
    Posts
    87

    Re: Switching from Chlorine Tabs to Bleach

    lelanapple...I would have to drain more than 18 inches of water to get back to 50 CYA. Then I would spend a delightful week or two getting my other levels back. Not worth it. My plan is to drain prior to closing and hope the remaining CYA breaks down somewhat over the winter.
    28,000 gallons, 18x36, vinyl liner
    Hayward C4030 Cartridge Filter, Hayward TriStar VS 900 Pump, Raypak 400 BTU gas heater,
    Stenner 45mhp10 Peristaltic Pump (for bleach injection)
    2 skimmers, 2 returns, main drain, Lamotte ColorQ and TF-100 test kits

  7. Back To Top    #7

    Join Date
    Jul 2015
    Location
    San Marcos, CA
    Posts
    110

    Re: Switching from Chlorine Tabs to Bleach

    I'm in the same boat too. Used Trichlor pucks for the longest time (so convenient!). My CYA is - embarrassingly high. The trouble with CYA is it doesn't break down. You have to remove it, which means either dumping water or running it thru an expensive reverse osmosis process. In the fall I am dumping my pool completely and refilling. High CYA is just such a buzzkill for pool enthusiasts!
    16 x 32 IG plaster pool, 23k gallons, built 1992, DE filter, Pentair VS pump, IoThyngs controller, Taylor 2006 test kit, SoCal water restrictions
    Newbies with green pools, see SLAM and Recommended Test Kits. My company: IoThyngs

  8. Back To Top    #8
    ship of fools's Avatar
    Join Date
    Nov 2011
    Location
    Albany, NY
    Posts
    495

    Re: Switching from Chlorine Tabs to Bleach

    Quote Originally Posted by Amail View Post
    I'm in the same boat too. Used Trichlor pucks for the longest time (so convenient!). My CYA is - embarrassingly high. The trouble with CYA is it doesn't break down. You have to remove it, which means either dumping water or running it thru an expensive reverse osmosis process. In the fall I am dumping my pool completely and refilling. High CYA is just such a buzzkill for pool enthusiasts!
    My CYA disappears every winter and so does my next door neighbor who has the luxury of living next to an amateur pool nerd . I am in Upstate NY and the OP is downstate and it doesn't get as cold but there is a chance your plan might result in lower CYA levels when you open next spring.
    21,000 gallon inground
    Haywood Sand Filter
    Vinyl Liner

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