User Tag List

Informational! Informational!:  0
Likes Likes:  0
Page 1 of 2 12 LastLast
Results 1 to 8 of 9

Thread: Water PH

  1. #1
    Plant Addict!! tje25's Avatar
    Join Date
    Nov 2011
    Location
    Iowa
    Posts
    606
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Water PH

    Does anyone ph there water? If so what do you set it at? I'm pretty sure I read somewere to put it around 7, but I wanted to here what you guys had to say.

  2. #2
    cpsammich's Avatar
    Join Date
    Jul 2011
    Location
    Northern Virginia
    Posts
    594
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You want neutral which is seven
    For it to be a different pH you would have to have a large number of impurities
    Any water you want for your cps should be 7ish
    Though I'm not really sure I understand the question

  3. #3
    Tastes like chicken! Exo's Avatar
    Join Date
    Mar 2010
    Location
    Albion, NY
    Posts
    2,895
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    mine tends to be either neutral or slightly acid (rainwater).....plants do well with either,
    Some days it just isn't worth chewing thru the restraints.

    My growlist: http://www.terraforums.com/forums/sh...255#post961255

    Video of my birth http://www.youtube.com/watch?v=7Xc5wIpUenQ

  4. #4
    Edward Rokosauros's Avatar
    Join Date
    Mar 2011
    Location
    Selangor, Malaysia
    Posts
    251
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Mine should be neutral or slightly acidic in terms of rainwater. Neps will do fine with normal water pH, they don't need any special pH value water.
    Edward

    My Growlist
    My Twitter page

  5. #5
    Plant Addict!! tje25's Avatar
    Join Date
    Nov 2011
    Location
    Iowa
    Posts
    606
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks everyone, I plan on using ro water. It comes out at right around 4-5 tds and around 3.5-4.5ph. So I will be adjusting it up to 6.5-7.0ph.

    My tap water comes out at about 400-500 tds and a ph of 7.0-7.5

  6. #6

    Join Date
    Aug 2002
    Posts
    518
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You shouldn't need to adjust RO water I wouldn't think. There will be so little impurities in it, that whatever the pH seems to be, it will be so poorly buffered as to swing dramatically when it comes into contact with just a tiny amount of acid or base.

    We at BE use ground water which starts at pH 6.5 at most times of the year. After passing through a slow sand filter and shock chlorinating it to be sure of no pathogens, we then adust the pH to between 5.0 and 5.5. However, we use coir fiber and chips as potting media which is not very acidic but readily available here. If your media is naturally acidic, e.g. containg peat or sphagnum moss, then neutral water should be fine.
    Rob Cantley
    Nep Nut in Sri Lanka
    http://www.borneoexotics.com

  7. #7
    jesse's Avatar
    Join Date
    Jan 2011
    Location
    Hamburg (Germany)
    Posts
    184
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by tje25 View Post
    Thanks everyone, I plan on using ro water. It comes out at right around 4-5 tds and around 3.5-4.5ph. So I will be adjusting it up to 6.5-7.0ph.
    You don't need any PH adjusting when using (nearly) mineral free water.
    What Borneo said is absolutely correct.

    The PH of mineral free water is pure fantasy.
    Such water takes the PH of the soil immediately when you pour the water over it.
    Mineral free water has no buffer capacity for PH, soil has. So you can pour as much mineral free water of a certain PH over soil with another PH, and the PH of the soil will not change. The water takes the PH of the soil.

    BTW: A low PH of your water is most likely caused by diluted CO2 in the water. CO2 + H20 = H2CO3 (carbonic acid). In that case, the simplest way to "adjust PH" (remove H2CO3 from water) is, to "shake well in the air". You can either put the water in a container, 1/3 water, 2/3 air, close and shake the container so CO2 will go out of the water into the air, the PH is going up (nearer to 7). Or just pour the water through the shower head of a watering can a few times with the same effect.
    Last edited by jesse; 11-29-2011 at 11:57 PM.

  8. #8
    mobile's Avatar
    Join Date
    Nov 2007
    Location
    Aberdeenshire, Scotland
    Posts
    1,070
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    A good explaination of pH of pure water here: http://www.lenntech.com/applications...ised-water.htm

    As stated by others, there is no need to adjust the pH for your plants.

Page 1 of 2 12 LastLast

Posting Permissions

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