How do I raise the PH of my soil?

Discussion in 'Indoor Growing' started by marinegreen, Oct 29, 2010.

  1.  
    marinegreen

    marinegreen Member

    I need to raise the PH of my soil but I can't seem to figure out how to other than using dolomite lime but I don't know where to buy that stuff?

    I also read that it takes 6 months for lime to actually adjust the pH

    Does anyone know how I can quickly raise the ph of my soil because I have yellow,brown,crispy leaves on the bottom of my 1 month old seedlings?
  2.  
    marinegreen

    marinegreen Member

    70+ views and no replies :(

    help please... they don't look healthy.

    Where can I buy lime dolomite if there is nothing easier to buy?
  3.  
    Jeffdogg

    Jeffdogg Well-Known Member

  4.  
    marinegreen

    marinegreen Member

    I found a place to buy dolomite lime in pellet form - going to try that - and next grow I am going to make my own soil mix and use FF if I can find it or some other organic brand and I am also going to invest in some pH meters for the soil and the water, also going to buy some HQ organic nutes and better soil containers and buy mylar and use some kind of superthrive.
  5.  
    bird mcbride

    bird mcbride Well-Known Member

    You can get dolomite lime from a lumberyard, it's used in concrete. The lime will bring your ph down. If you want to go up with your ph, try some ashes. I use cigerette ashes to bring my ph up.
  6.  
    Spanishfly

    Spanishfly Well-Known Member

    You appear to be totally confused. Lime is alkaline and will RAISE your pH. It actually tends to buffer your pH around 7 and stops it becoming too low (acid).
  7.  
    bird mcbride

    bird mcbride Well-Known Member

    I've been using dolomite lime in my F&D system for years to bring down the ph and when I get to much I toss in some ashes to bring it back up again. The two balanced off against each other creates co2 in the res.
  8.  
    Jeffdogg

    Jeffdogg Well-Known Member

    Well as stated here

    So in some cases it can bring the PH down while at the same time bring the PH up for other situations :D
  9.  
    bird mcbride

    bird mcbride Well-Known Member

    The best way to rebalance your plants soil is to transplant it in some new balanced soil.
  10.  
    marinegreen

    marinegreen Member

    How do I do this? Do I remove soil from the root ball? to get rid of as much of the shitty soil as possible?

    They are already in big containers... but they were only transplanted a few days ago so the rootball might not be that big...

    The plants look messed up right now - crispy, yellow, brown lower leaves and it seems to be stunting the growth on some of them... it's all the lower leaves but on some of them 2-3 nodes from the top are getting the same way :(

    I have some soil that I thought was shitty but it has to be better than the crap that it is in now - because I am using the same tap water I used on my last grow and had no proiblems... I bought what I thought was better soil this time and got some clfl's etc and everything was going fine until day 28 when I transplanted them to bigger containers... then this happened... grr :(

    I don't have a ph meter but from everything i have read I am guessing the pH is too low.

    If transplanting works - how soon after I transplant should I expect to see a change?

    Here is my original thread: http://www.rollitup.org/marijuana-plant-problems/380099-day-29-lower-leaves-turning.html

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