low ph run off ?

Discussion in 'Marijuana Plant Problems' started by f1bud, Sep 29, 2011.

  1.  
    f1bud

    f1bud Active Member

    just repotted my 3 plants and then waterd them wiv 6.5 ph and added a pinch of epson salts to help out some probs tested the run off and it was 5.1, headaches nowt but headaches, lol, why wud this be and how do i prevent it ?
  2.  
    MoonRaver

    MoonRaver Active Member

    Thorough flush with PH 6.5 water....... and start using liquid fertilizer because you will have flushed out all the goodies in the soil.
  3.  
    nick17gar

    nick17gar Well-Known Member

    or water with 7.0 ph water so the runoff becomes more like 6.5ish. then you know your soil is about right
  4.  
    Kingrow1

    Kingrow1 Well-Known Member

    Your telling me that fresh soil with water gave you a run off at 5.1?? If this is so you definatly got problems, what soil is that??

    My fresh potting and seedling soil gives me a runoff of 6.3 which is basically its pH before adding ferts. Peace
  5.  
    Marlboro47

    Marlboro47 Well-Known Member

    Any nutrients not made for hydro will probably make your soil more adic. Do a luke warm water flush or flush with a flushing solution and then forget about your runoff problems. Remember to feed afterwords.
  6.  
    MrGhettoGrower

    MrGhettoGrower Well-Known Member

    How are the plants looking? Soil runoff tests are not accurate~
    Here's a link to what fox farm says about it~
    http://blog.foxfarmfertilizer.com/soils/
    It's the sixth paragraph down under "helpful hints".


  7.  
    Wetdog

    Wetdog Well-Known Member

    Dolomite lime will fix your soil pH and you can dispense will all the other nonsense.

    Wet
  8.  
    f1bud

    f1bud Active Member

    i am using soil from local hydro store its a top mix gold lable popular in uk, i repotted them and waterd and the ph come out at 5.1 and the same today wen repottin the last one, so i guess i will av to run ph 7 through on next water, thanx man
  9.  
    f1bud

    f1bud Active Member

    yeah nice link there man, i av done the test mix a bit of soil wiv water n ph that instead of run off as the run off can just b a load of nutes giving a rong readin,,, cheers man
  10.  
    f1bud

    f1bud Active Member

    also man it wudb nice if u had a remedy rarther than just say if thats the reading i am fucked,, hardly inspiring answer, but dont get me rong if this is the case then i dont mind hearing the truth just wud like to no the cause rarther than bein told im'e fucked if u dig wat am sayin,, but thanx for the reply all the same man i do appreciate it
  11.  
    f1bud

    f1bud Active Member

    shud of sed i added some epson salts and then regulated the ph to 6.5 then waterd and it come out at 5.1, though i am doin a soil water test at the min, according to foxfarm this will give u a more accurate reading !! Courtesy of help from here
  12.  
    Kingrow1

    Kingrow1 Well-Known Member

    pH5.1 in soil dose mean your screwed, what else can i say!

    Gold label top mix, definatly not gold label coco?

    Why so much epsom salts dude, id not bother unless you got a ppm meter and can ppm your water to between 30/40 ppm mag/epsom salts. If you knew calcium levels were at about 100ppm then this would futher be cool. Overall with the water and ferts and lime in the soil we aim to hit a cal/mag ratio of 3:1 on average with the previous cal/mag ppm's.

    Probably dont screw with cal/mag unless your sure you need one or the other and even then buying a bottle of either canna monno mag or cal for seperate supplementation or just the liquid cal/mag supplement most other fert companies sell is best recomended. Up the cal or mag levels too much and you'll lock the other out.

    Your soil (if its definatly not the coco version) is more than pH buffered and limed (which is also adding cal/mag to the plants also) so i would just stop checking its pH. Maybe its a bit strong in ferts giving it a lower than usual pH but other than that i would just lightly flush and never check pH again. Any futher problems would cause me to change my soil company but i see no peoblem with this one.

    Have you tried just adding plain water for two or three weeks and seen if you get good growth yet? Epsom salts would be the last thing id be adding to a limed organic soil with guano and other such things

    Just for asking you have described bad runoff pH but has the plant itself got any problems from being in this soil yet or is it not to bothered and growing fine?

    I cannot tell you what the problem is with perfectly normal marijuana grade soil, probably isnt one, recalibrate your meter or just dont check it again and grow on. Ive told you what cal/mag levels for weed are, ive seen your soils fine for growing weed and talked a little about why you would need epsom salts and why id just not bother with runoff readings for a while till ive simply potted up a plant and given it straight water for three weeks to see if there actually was a problem in the first place.

    Peace
  13.  
    f1bud

    f1bud Active Member

    hi thanx for the input, wen ur new to the game its a handfull so thanx for any feed back, ive just put 4 pics up in the plant problems section listed ( is this nute burn ? ) maybe u cud av a look,, i grew in the soil last grow my first attempt andgot good results but did get yellowing of leaves then also but this is probly my fault, just dont no how to sussit without a ppm wand i will buy one eventualy wen i av the pennies but for now i av to guess an ask u guys,, i av one pine aplle chunk in there n she aint got the yellow tips n yellow leaves like the 3 WW, like ive sed in my post in the sicky section i av leaf tip burn yellowing of bottom leaves and new growth as shown yellow tips from the begining but not on the P.C she looks well, thing is i amone wekk into 12/12 just repotted them i av theese probs, ive allready added the E.S so cant take that back, wivout a ppm meter im'e stuffed to a degree, oh by the way done a soil mixed wiv water according to foxfarm soils it gives u a more accurate reading of ur soil, andit come out at 6.2 ph so isupose its a big dif between the 5.1 i got from the water run off, so asuming it is 6.2 ph what shud i do nextno feed ? just water ? and ph it to 6.5? see how it goes, but remember i am one week into flower now. cheers for ur input man !
  14.  
    Wetdog

    Wetdog Well-Known Member

    Gave you a remedy. Dolomite lime, or calcitic (Garden,sweet) lime, or oyster shell flour, or similar.

    Wet
  15.  
    Jack Harer

    Jack Harer Well-Known Member

    You have to buffer the pH or it's just gonna keep bounding around. Wetdog gave you your answer. Don't even try and correct anything until you stabilize pH. Don't add anything because it is probably there, just locked out.
  16.  
    Kingrow1

    Kingrow1 Well-Known Member

    How is brand new gold label pre buffered and pH of such a low acidity? He got these readings from fresh soil on a re-pot?? If this was the case id buy a different soil but yer lime will sort pH out but as to why its so low in the first place i have no idea?? Peace
  17.  
    Jack Harer

    Jack Harer Well-Known Member

    Good question King, I have no idea other than maybe it isn't pre-buffered?
  18.  
    f1bud

    f1bud Active Member

    eh thanx for the link man to foxfarms advice on ph runoff, i did there recomended way of testing n it give me a reading of 6.2 so a hell better than 5.1, lol, again thanx man,, gr8 site wen recieving tips like this
  19.  
    Kingrow1

    Kingrow1 Well-Known Member

    Id like wetdoggy dog said add some lime to the next batch of soil you use and just dont bother with pH again. I hate even checking runoff unless i got problems, causes more grief than it solves. Soil should be fine without the lime anyway just add water no ferts and grow for a few weeks that simple and maybe some perlite.

    Too many people get caught up worrying about pH, add lime and never check it again, low pH in a grow means overferting not acidic soil, seriously forget about pH is bs! Peace
  20.  
    Kingrow1

    Kingrow1 Well-Known Member


    My soil is 6.3 out of the bag, i add powdered dolomite lime at 1 teaspoon to a litre or 1 tablespoon to a gallon and its done. I guess there was nothing wrong with your soil pH to start with just overcomplicating pH. Peace

Share This Page