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Thread: Brown poolwater

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    Join Date
    Apr 2015
    Location
    Surin Thailand
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    3

    Brown poolwater

    Live in the northeastern part of Thailand, upcountry, some miles outside of a small town with ricefields around. My pool is 10 years old. Filled it with water from the nearby artificial lake and filtered it with the own housewaterfilter during first filling. Changed to groundwater some weeks ago. It is a bit salty, but very clean. Must have iron in it. Why do I know that? For about 2 1/2 weeks the water remained very clear without adding any kind of chemical substances. Suddenly turned green and greener. Thought it must be because of copper or iron. Wrong! Full of Algae ! Put chlorine in it. Next day I had coffee in the pool. Filtered the water about 36 hours and then the water was again crystal clear and is at present still very clean. But soonest algae will return for sure.
    questions:
    1.How can I eliminate the iron. Because coffee will return again soon for sure if I use chlorine.... I googled a lot but could not find an answer for my problem.
    2. Is there a cheap non-chlorine algae killer known to the experts or any kind of a iron-off method? We do have here in this country professional poolspecialists but all of them want to sell incredibly expensive stuff.

    Thanks a lot for your hints and tipps.
    (btw..I still wait for the professional water analysis which I will receive soonest I hope)
    kindest regards
    Alfred
    8 x 5 x 1.5 meters inground pool / Century pool&spa motor A.O.Smith. OH 45371 / 8.1 A / 2875 RPM / Jacuzzi Magnum force/
    sandfilter LACRON for 60'000 litres / cement ground

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    ComputerGuyInNOLA's Avatar
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    Oct 2012
    Location
    Mandeville, Louisiana
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    602

    Re: Brown poolwater

    I can't answer your question but I just wanted to welcome you to the forum. You are the first member I have seen from Thailand. Could you post some pictures?
    Gunite/Plaster pool at 13k gallons. All Jandy with CL340 series cartridge filter, 1.5 HP Jandy Stealth pump. Jandy 1400 SWCG and PDA4 controller. Dual waterfalls. Polaris 280. Pool installed August 2012. Southern Louisiana. And lets not forget my trusty TF100 test kit!

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    Swampwoman's Avatar
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    Apr 2012
    Location
    Grand Rapids, MI
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    3,538

    Re: Brown poolwater

    Hi there. Don't forsake the chlorine or you'll be trading coffee for cloudy green water

    However, there are metal sequestrants that will help "tie up" the iron so it doesn't oxidize as much. Are you able to order Metal Magic or Jack's Magic (pink) online? If so, order a case at a time if you can't change your water or get an iron-free source. The key ingredient is phosphonic acid. Its the same stuff many water pants use to tie up/sequester iron.

    Re the now-brown water....Your sand filter will very slowly get "some" of the oxidized iron out...but never all, IME. Sometimes wrapping your skimmer basket in a cloth/sock will help get some of it too. So filtering, lots of sequestrant, may look after the brown appearance, but you will still have iron in the water.

    Maintaining a sequestrant level will help avoid the otherwise inevitable iron staining, and maintaining your pool the TFP way will help you AVOID having to shock to high levels in the future, which in turn will reduce the likelihood of the tea effect

    So please read through pool school to get a handle on that if you haven't already.

    I have iron from my well water and with high startup dose of sequestrant (in my case, 5 bottles) and weekly additions to maintain, I don get stains anymore. I keep my FC level between 5-7 ppm for my CYA level and never have problems now even at higher levels, though I've never had to shock since learning TFP.

    Good luck! I hope you're able to find some good metal sequestrant in your country, or someone who will ship. Otherwise, you'd be better off trckng in water, because there's really no way to get iron entirely out of a pool except water change.
    In ground extended Grecian, 22,000 gal, Hayward 220t sand filter, vinyl liner, dolphin m4 supreme.
    If TFP has helped you, please click to SUPPORT TFP!
    Helpful Links:
    GET A TEST KIT Chlorine/CYA Chart How to SLAM About Metals & Stains

  4. Back To Top    #4

    Join Date
    Apr 2015
    Location
    Surin Thailand
    Posts
    3

    Re: Brown poolwater

    Hi, Computerguyinnola,
    Thanks for your being interested in the place where I live. Buddhis Kingdom of Thailand, rich in buddhist culture, founded 1292 AD, 65 M inhabitants, 60% ricefarmers, 40 % industrial prod. and tourism, one of the top ten touristplaces in the world (among the US! friendly, smiling people, incredible good food...
    best regards Alfred P1000854.1.jpga_gruetzner@yahoo.de
    kindest regards
    Alfred
    8 x 5 x 1.5 meters inground pool / Century pool&spa motor A.O.Smith. OH 45371 / 8.1 A / 2875 RPM / Jacuzzi Magnum force/
    sandfilter LACRON for 60'000 litres / cement ground

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    northrn's Avatar
    Join Date
    May 2014
    Location
    Cincinnati, OH
    Posts
    532

    Re: Brown poolwater

    Wow! What a stunning view!

    Welcome to TFP!
    27' AG 18K Gallons ~ Cartridge Filter ~ Pentair 1.5 HP Pump

  6. Back To Top    #6
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
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    DFW, TX
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    23,999

    Re: Brown poolwater

    Yeah, that is awesome!
    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

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    Join Date
    Apr 2015
    Location
    Surin Thailand
    Posts
    3

    Re: Brown poolwater

    Quote Originally Posted by Swampwoman View Post
    Hi there. Don't forsake the chlorine or you'll be trading coffee for cloudy green water

    However, there are metal sequestrants that will help "tie up" the iron so it doesn't oxidize as much. Are you able to order Metal Magic or Jack's Magic (pink) online? If so, order a case at a time if you can't change your water or get an iron-free source. The key ingredient is phosphonic acid. Its the same stuff many water pants use to tie up/sequester iron.

    Re the now-brown water....Your sand filter will very slowly get "some" of the oxidized iron out...but never all, IME. Sometimes wrapping your skimmer basket in a cloth/sock will help get some of it too. So filtering, lots of sequestrant, may look after the brown appearance, but you will still have iron in the water.

    Maintaining a sequestrant level will help avoid the otherwise inevitable iron staining, and maintaining your pool the TFP way will help you AVOID having to shock to high levels in the future, which in turn will reduce the likelihood of the tea effect

    So please read through pool school to get a handle on that if you haven't already.

    I have iron from my well water and with high startup dose of sequestrant (in my case, 5 bottles) and weekly additions to maintain, I don get stains anymore. I keep my FC level between 5-7 ppm for my CYA level and never have problems now even at higher levels, though I've never had to shock since learning TFP.

    Good luck! I hope you're able to find some good metal sequestrant in your country, or someone who will ship. Otherwise, you'd be better off trckng in water, because there's really no way to get iron entirely out of a pool except water change.
    Hi Swampwoman,
    Thanks a lot for your helpful hints and tips. As I am in Thailand, I do not have access to the products familiar to you. Anyhow, in Bangkok there are many shops specialized to pool chemistry. And I have now to contact them by mail first. Living upcountry, it will take some time until I get stuff from them here by postal parcels. I shall also go through Pool School to get acquainted with the subject.
    Thanks again for your help and have good times.

    Kindest regards
    Alfred
    kindest regards
    Alfred
    8 x 5 x 1.5 meters inground pool / Century pool&spa motor A.O.Smith. OH 45371 / 8.1 A / 2875 RPM / Jacuzzi Magnum force/
    sandfilter LACRON for 60'000 litres / cement ground

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