playing with ph

Discussion in 'Growing Marijuana Indoors' started by brian8472, Sep 28, 2004.

  1. #1 brian8472, Sep 28, 2004
    hey guys. i did some damage looks like ether raised or lowered the ph due to prolonged ferting. problems not too bad but i need to know how to change the ph in soil up and downwards just so i know :p because they are getting alot of minute problems that will develop worse over time.
     
  2. #2 gonnagrow, Sep 28, 2004
    The best method is to add lime or limestone to your soil mix *before* you plant and let it sit for at least a couple of weeks. This helps the soil pH stabilize giving you less problems during your grow.

    Seeing as though you are past that however, you need flush the soil with lots of pH neutral (7.0) water. This will rid the soil of salts and built up ferts and help bring the pH back close to normal.

    Gg
     
  3. #3 brian8472, Sep 28, 2004
    what types of water are ph 6.5-7?
     
  4. #4 gonnagrow, Sep 29, 2004
    I use tap water for regular waterings but out of the tap the pH is too high. I use phosphoric acid (hydroponics store) and superthrive to even the pH out at 7.0.

    For cloning and seed germination I use distilled water.

    Gg
     
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  5. #5 brian8472, Sep 29, 2004
    ok so my water is hard and i prolonged ferted. will these make the ph increase or what? i need to know what to do and how to proceed
     
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  6. #6 NaughtyDread, Sep 29, 2004
    your soil could be too acidic at this point with the prolonged ferting, id flush like GG said, get some of those salts out. but first and foremost if you think youre having a lockout, you need to get the pH tested asap! lowes and home depot have soil testers.
     
  7. #7 celticweedlover, Sep 30, 2004
    Yep ^
    Get something u can test the ph with first to see exactly wot the problem is,
    then you'll know where to go from there ;)
    CWL
     
  8. #8 brian8472, Sep 30, 2004
    im going out today to get one ill write back with results
     
  9. #9 sidious, Sep 30, 2004
    flush with bottled water, it's usually close to 7.0...........even it's nute locked a flush will help, i flush a grow maybe about twice from seed to bud...........good luck, and yes a ph soil tester is allwys a handy thing to have.............Peace out..........Sid
     
  10. #10 brian8472, Oct 1, 2004
    could i boil the water then let it sit at room temp? or do i buy distilled water or what? :) just wanna make sure i know what im doing :p
     
  11. #11 sidious, Oct 1, 2004
    i'd go with bottled just incase...........Peace out.......Sid
     
  12. #12 brian8472, Oct 1, 2004
    yay i got a ph tester ok my ph for both plants is 8.5 :/ a little too high me thinks so what should i do? ive been giving it boiled water left at room temp and its ph is 7 so should this change the soil ph to 7 over time too?
     
  13. #13 sidious, Oct 1, 2004
    you could buy ph adjuster, but if you flush with enough 7.0, it'll be fine..........Peace out.........Sid
     
  14. #14 brian8472, Oct 2, 2004
    thanks guys i hope these babys turn out as good as the last ones :)
     
  15. #15 brian8472, Oct 3, 2004
    where do i buy ph ajuster? im up in canada :p
     
  16. #16 Splifster, Oct 5, 2004
    to lower your pH you could use peat moss. as well as sawdust or woodchips. hope this helps. :)
     
  17. #17 WhiteandMellow, May 28, 2011
    Last edited by a moderator: May 28, 2011
    I was using tap water and leaving it for 2 days prior to using. Anyway iv decide to buy still spring water and was wondering if anyone can tell me if this ok before i use it on my young plants! Any advice much appreciated guys :)

    Bicarbonate 150, Calcium 40.5, Chloride 6.1, Magnesium 10.1, Nitrate (as NO3) 3.1, Potassium 0.7, Sodium 5.6, Sulphate 5.3, PH is 7.8, Average analysis mg/L:

    peace
     

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