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| Forums > Marijuana Growing > Cannabis Infirmary > Joe's Fresh Guide to Sick Plant Diagnosis | ||
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04-28-2012, 09:56 PM
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#41 |
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Banned
Join Date: Feb 2007
Posts: 5,734
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oh ok, i was saying it looks like iron because its mostly on the young leaves and iron is immobile and potassium is mobile. .
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04-28-2012, 10:09 PM
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#42 |
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Inveterate Tinkerer
  
Join Date: Feb 2010
Posts: 6,090
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I've missed this thread up until now - very nice work Joe. It looks like you've compiled a whole bunch of my bookmarks here! Thank you.
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04-30-2012, 04:36 PM
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#43 |
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Member
Join Date: Feb 2009
Posts: 243
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awesome guide joe
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05-07-2012, 04:13 PM
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#44 |
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New Member
Join Date: Apr 2005
Location: Police State
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great stuff, thanks for putting this together
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05-22-2012, 04:54 AM
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#45 |
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Member
Join Date: Feb 2012
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Thanks...
Very informative |
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05-28-2012, 08:20 AM
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#46 |
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Member
Join Date: Sep 2006
Posts: 903
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Potassium deficiency? Neb is supposed to be a very heavy drinker and I was backing off the nutes because didn't know that until recently and I thought I might be burning them. I have them dropped down to 950-1000 PPMs (.7 Conversion factor I think). Should I bump them back up to 1100 or so? If nobody tells me this is definitely a deficiency I'm going to wait until my next crop goes in and keep one res at 950-1000 and bump the other one up to 1100-1200 and see which one responds better.
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05-28-2012, 08:27 AM
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#47 | ||
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Senior Member
Join Date: Mar 2010
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nahh the burnt tips along withh the scorching is def nute burn....give them a flush(or plain water if in hydro.dwc) for a day or 2 and then resume...
__________________
FRESH BEANS Co.(COMMING THIS SUMMER) Quote:
Quote:
Phytophythora - "The Plant Destroyer" Pythium Root Rot in Soil and Hydroponic Applications Salt Tolerance of Plants in Soil Pour Thru Method for testing soil PH and EC Substrate pH: Getting it Right for Your Crops Marijuana Documentaries |
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05-28-2012, 09:13 AM
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#48 |
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Member
Join Date: Sep 2006
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Okay, great, glad I asked. I'm at around 950 now. What should I shoot for after the flush? 800 or so?
I'm using well water, it's 250 PPM out of the tap. And I'm running ebb and flow in hydroton/red lava rock mix. |
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05-28-2012, 09:16 AM
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#49 |
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Member
Join Date: Sep 2006
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Used to be able to delete posts.
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05-28-2012, 09:31 AM
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#50 | ||
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Senior Member
Join Date: Mar 2010
Posts: 3,025
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how old? how big are they? what nutes?
__________________
FRESH BEANS Co.(COMMING THIS SUMMER) Quote:
Quote:
Phytophythora - "The Plant Destroyer" Pythium Root Rot in Soil and Hydroponic Applications Salt Tolerance of Plants in Soil Pour Thru Method for testing soil PH and EC Substrate pH: Getting it Right for Your Crops Marijuana Documentaries |
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