Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 13 of 13

Thread: Will bleach damage my above ground vinyl pool?

  1. Back To Top    #1

    Join Date
    Jun 2016
    Location
    Manchester, United Kingdom
    Posts
    41

    Will bleach damage my above ground vinyl pool?

    Hi

    I've got 26500 Litre above ground vinyl pool. I want to start using the TFPC method, but it might need to start next season.

    Will liquid bleach damage my vinyl liner? Discolour it? We had a mishap about 6 years ago where a trichlor puck fell out of the dispenser and left a nice perfect white circular stain on my pool floor ever since

    I don't want anymore mishaps.

    Additionally, all of the bleach I can see in the laundry aisle of Tesco (I live in the UK) and Aldi is 4.5% and I know the TFPC method says use 6%. What should I do?

    Cheers
    Joe
    26500 Litre (6000 imp gallon) Above ground vinyl pool. Manufactured by GRE (Spain). 10 years old this year.
    Sand filter. Single speed pump. Elecro 9kW heater.
    Test using a TF 100 kit and AquaChek strips if desperate!

  2. Back To Top    #2
    S1ngram's Avatar
    Join Date
    Jun 2014
    Location
    Chrisman, Illinois (East Central Illinois)
    Posts
    300

    Re: Will bleach damage my above ground vinyl pool?

    Using pool math, you can enter the percent concentration of the bleach you are using. Because your concentration is lower, you will use more. Use plain bleach. Do not buy scented, splashless or any other fancy type. Also, you might start looking around for an alternate supply of higher concentration or consider another method of chlorination like a salt water chlorine generator.

    Bleach, when used following this method does not bleach the liner.
    Last edited by S1ngram; 09-01-2016 at 08:48 AM. Reason: Typo
    27' round Seaspray Evolution, AG, 17,100 gallons, Pump: Hayward Power-Flo Matrix Dual Speed 1.5 hp, Filter: Hayward Pro Series High Rate Sand Filter, June 18, 2014, Kreepy Krauley Lil Shark, TF-100 test kit, Intex Krystal Clear Saltwater System

  3. Back To Top    #3
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,994

    Re: Will bleach damage my above ground vinyl pool?

    TFPC doesn't specify any particular percentage. 6% was just a common percentage sold at the grocery store at the time. Any percentage of sodium hypochlorite is good, from 3% to 15%. Just be sure to change the percentage in PoolMath so you get the correct dosage. No, bleach/liquid chlorine will not bleach your liner if you follow TFPC recommended levels and practices.

    More here,
    Pool School - Recommended Levels
    FC/CYA Chart
    Pool School - Recommended Pool Chemicals
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  4. Back To Top    #4

    Join Date
    Apr 2016
    Location
    College Station, TX
    Posts
    79

    Re: Will bleach damage my above ground vinyl pool?

    Quote Originally Posted by pooldv View Post
    TFPC doesn't specify any particular percentage. 6% was just a common percentage sold at the grocery store at the time. Any percentage of sodium hypochlorite is good, from 3% to 15%. Just be sure to change the percentage in PoolMath so you get the correct dosage. No, bleach/liquid chlorine will not bleach your liner if you follow TFPC recommended levels and practices.

    More here,
    Pool School - Recommended Levels
    FC/CYA Chart
    Pool School - Recommended Pool Chemicals
    I'm afraid I have to disagree with one of the most experienced posters on here. I will qualify though. Bleach will "bleach" just about anything at high enough concentrations. The thread below, I started, discusses the causes. Most likely for me is aging and low quality inks. It seems to be common for Intex liners. I am a recent convert to TFPC. And the dichlor did a lot more immediate damage to my liner in the first two years I used it than bleach has in this last year. What I mean is, the dichlor would settle on the bottom sometimes and turn that spot white AND cause, for lack of a better term, dimples, in the liner. And I would spread it out pretty thin. It just wouldn't dissolve fast enough. I should have been brushing after adding I suppose, but anyone who moans about adding liquid chlorine every day should try brushing every time they add granules.

    So, my opinion is, if the ink is going to be "bleached", it will be by whatever chlorination method you choose. Just like the granules need to be treated with respect to keep them from damaging a liner, the liquid should be poured slowly and in front of a return jet so it is mixed well.

    Better yet, get a SWG.

    Link to the other post below(I hope):
    Anybody have their Intex AGP liner lose its color?

    https://r.tapatalk.com/shareLink?url...7&share_type=t
    Intex 16'x32'x54" 17Kgal AGP since 2014. Sand filter, Hayward skimmer, home built 10'x15' deck and stairs, solar heater. High TA tap water, moderate rainfall, weekly use. Treated with 10% bleach, MA and some dichlor initially. Soon to add borates.
    Taylor K2006C
    Future projects - automatic chlorine pump, online pool sensors, better heater, IGP (maybe)

  5. Back To Top    #5

    Join Date
    Jun 2016
    Location
    Manchester, United Kingdom
    Posts
    41

    Re: Will bleach damage my above ground vinyl pool?

    I would get a SWG no questions. But my pool/liner was only supposed to / guaranteed to last 3 years and it's now in its 10th. I don't want to fork out 400 for an SWG then to have the liner split next year.


    26500 Litre (6000 imp gallon) Above ground vinyl pool. Manufactured by GRE (Spain). 10 years old this year.
    Sand filter. Single speed pump. Elecro 9kW heater.
    Test using a TF 100 kit and AquaChek strips if desperate!

  6. Back To Top    #6

    Join Date
    May 2016
    Location
    Troy IL
    Posts
    465

    Re: Will bleach damage my above ground vinyl pool?

    Quote Originally Posted by welbo View Post
    I'm afraid I have to disagree with one of the most experienced posters on here. I will qualify though. Bleach will "bleach" just about anything at high enough concentrations. The thread below, I started, discusses the causes. Most likely for me is aging and low quality inks. It seems to be common for Intex liners. I am a recent convert to TFPC. And the dichlor did a lot more immediate damage to my liner in the first two years I used it than bleach has in this last year. What I mean is, the dichlor would settle on the bottom sometimes and turn that spot white AND cause, for lack of a better term, dimples, in the liner. And I would spread it out pretty thin. It just wouldn't dissolve fast enough. I should have been brushing after adding I suppose, but anyone who moans about adding liquid chlorine every day should try brushing every time they add granules.

    So, my opinion is, if the ink is going to be "bleached", it will be by whatever chlorination method you choose. Just like the granules need to be treated with respect to keep them from damaging a liner, the liquid should be poured slowly and in front of a return jet so it is mixed well.

    Better yet, get a SWG.

    Link to the other post below(I hope):
    Anybody have their Intex AGP liner lose its color?

    https://r.tapatalk.com/shareLink?url...7&share_type=t
    You say you disagree, but then you go on to pretty much agree. Pooldv did say "if you follow the TFPC method" you won't have problems with prematurely bleaching a liner. The TFPC method does say poor slowly in front of return to disperse properly.

    Also, instead of SWCG, you could get a stenner pump and dribble the liquid chlorine into a return line at 1oz a minute or so.

    17,500 gallon IG Vinyl
    Pentair Tagelus TA60D Sand filter
    Pentair Challenger 1.5HP pump CFII N1 1.5A
    Taylor K-2006-A, Stenner 45MPHP10 auto chlorine feed

  7. Back To Top    #7
    Divin Dave's Avatar
    Join Date
    Oct 2013
    Location
    Longview, Texas
    Posts
    4,926

    Re: Will bleach damage my above ground vinyl pool?

    If you maintain the proper levels of FC and add the bleach apropriately, it will NOT damage your pool in any way, shape or form.
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
    www.tftestkits.net Experience- it's what's learned just after you needed it most !!

  8. Back To Top    #8
    kellyfair's Avatar
    Join Date
    Jun 2016
    Location
    Tampa, FL
    Posts
    173

    Re: Will bleach damage my above ground vinyl pool?

    Dave, did you mean "not" damage?
    Kelly, Tampa FL
    15' by 4' Intex above ground metal frame, about 5300 gallons
    Intex 120V Krystal Clear Sand Filter Pump & Saltwater System CG-28679 with E.C.O.
    TF100 Kit and Speedstir
    Intex Auto Cleaner - works great!

  9. Back To Top    #9

    Join Date
    Apr 2016
    Location
    College Station, TX
    Posts
    79

    Re: Will bleach damage my above ground vinyl pool?

    Quote Originally Posted by camueller View Post
    You say you disagree, but then you go on to pretty much agree. Pooldv did say "if you follow the TFPC method" you won't have problems with prematurely bleaching a liner. The TFPC method does say poor slowly in front of return to disperse properly.

    Also, instead of SWCG, you could get a stenner pump and dribble the liquid chlorine into a return line at 1oz a minute or so.
    My point is, mine and apparently many others' liners were bleached out completely, by bleach. If the water had had no chlorine in it, the ink would still be there. That's not to say that bleach is the sole source of the "problem". Low quality inks and age likely play a part too. But it is most certainly bleach that dealt the blow to the ink in the liner and turned it white. Even if I qualify that ANY form of chlorine in the proper level would have done the same thing, you can't say that bleach will definitely not damage a liner. I do think it is fair to say that it is no more risk than any other form of chlorination (maybe even a little lower risk, as I pointed out in my previous post).
    Intex 16'x32'x54" 17Kgal AGP since 2014. Sand filter, Hayward skimmer, home built 10'x15' deck and stairs, solar heater. High TA tap water, moderate rainfall, weekly use. Treated with 10% bleach, MA and some dichlor initially. Soon to add borates.
    Taylor K2006C
    Future projects - automatic chlorine pump, online pool sensors, better heater, IGP (maybe)

  10. Back To Top    #10

    Join Date
    Aug 2014
    Location
    Northern IL
    Posts
    4,615

    Re: Will bleach damage my above ground vinyl pool?

    If you stay within the proper FC/CYA relationship linked above, and again below, you should not have any extenisve bleaching. Some blues do fade, but reach an endpoint eventually.

    Pool School - Chlorine / CYA Chart

  11. Back To Top    #11

    RonsPlc's Avatar
    Join Date
    May 2015
    Location
    Gaylesville, AL
    Posts
    360

    Re: Will bleach damage my above ground vinyl pool?

    The Intex liners are WELL known to fade out within 3 years, regardless of the method used to maintain your pool. Which is the reason I re-lined my Intex pool with an Overlap liner this year. I am now working on 5 years with this pool, and can't be happier with it, even though the liner went completely white, it is still structurally sound. With the new liner, it looks like a new pool.
    14600 gal Intex 24' Round 52" deep AG Pool (Heavily Modified)
    200lb sand filter w/2 speed 1.5/0.5hp pump
    Stenner 45MHP10 Liquid Chlorine (well... bleach) Injector. Borates added.
    K-2006 test kit w/Speedstir
    Pool School - PoolMath - HIGHLY Recommended Test Kits

  12. Back To Top    #12
    Divin Dave's Avatar
    Join Date
    Oct 2013
    Location
    Longview, Texas
    Posts
    4,926

    Re: Will bleach damage my above ground vinyl pool?

    Yes,
    sorry everyone for the typo. Its a bit embarassing.



    Quote Originally Posted by kellyfair View Post
    Dave, did you mean "not" damage?
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
    www.tftestkits.net Experience- it's what's learned just after you needed it most !!

  13. Back To Top    #13

    Join Date
    Aug 2014
    Location
    Northern IL
    Posts
    4,615

    Re: Will bleach damage my above ground vinyl pool?

    Ha! YOU never need to feel embarrassed! You are such a great resource.

Posting Permissions

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