Magnesium, Calcium or Nitrogen deficiency?

D

Dub1620

Member
Hello All, thanks for checking out my post. Any help is greatly appreciated.

Strain - indica dominant OG Kush
# of Plants -18
Grow Type - Hydro
Grow Stage - veg in photos
Setup - DTW
Light - 1000 Watt MH
Nutrients - Advanced
Medium - Grodan Rockwool 6'' cubes on top of slabs
PPM - 600-900
PH - 5.7-6.2
RH - 40% to 55%
Room Temperature 68 to 78
Solution Temperature -70
Room Square Footage - 60
Pests - None Known


I have been growing the same strain for a few years and started running into problems a few months ago. At first I thought I had root aphids that were damaging my roots and in turn creating nutrient deficiencies. I recently built a new room at a new house and the problem seems to still be here. I get my clones from the same person every time, along with a handful of my friends, and I am the only one with this problem. This time I even got a few new strains from a club in oakland to see if they would do any better, they are starting to show the same signs. Now I am leaning towards it being a nute deficiency or burn. Everything I am reading is making me think it is either a mag def, or cal def. Any info or ideas are much appreciated.


VEG NUTES:
AN sensi grow 2 part 2mil/gal
Cal Mag 1mil/gal
b-52 1-2 mil/liter
Silica blast 2mil/gal
SM-90 1-2 mil/gal
AN MET Bloom tea 1mil/liter
cannazyme 10 mil/gal

Bloom Nutes: (Same as veg but i add a few more things)
AN sensi bloom 2 part 2 mil/gallon
Big Bud (after week 2) 2 mil/liter
Overdrive (after week5) 2 mil/liter
Bud candy (2 mil/liter)
(everything else listed in the veg schedule, minus the Sensi Grow)



The pictures shown are 18'' tall plants still vegging.IMG_0424.JPG IMG_0423.JPG IMG_0422.JPGIMG_0417.JPG IMG_0418.JPG IMG_0419.JPG IMG_0418.JPG IMG_0417.JPG
 

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Dub1620 said:
Hello All, thanks for checking out my post. Any help is greatly appreciated.

Strain - indica dominant OG Kush
# of Plants -18
Grow Type - Hydro
Grow Stage - veg in photos
Setup - DTW
Light - 1000 Watt MH
Nutrients - Advanced
Medium - Grodan Rockwool 6'' cubes on top of slabs
PPM - 600-900
PH - 5.7-6.2
RH - 40% to 55%
Room Temperature 68 to 78
Solution Temperature -70
Room Square Footage - 60
Pests - None Known


I have been growing the same strain for a few years and started running into problems a few months ago. At first I thought I had root aphids that were damaging my roots and in turn creating nutrient deficiencies. I recently built a new room at a new house and the problem seems to still be here. I get my clones from the same person every time, along with a handful of my friends, and I am the only one with this problem. This time I even got a few new strains from a club in oakland to see if they would do any better, they are starting to show the same signs. Now I am leaning towards it being a nute deficiency or burn. Everything I am reading is making me think it is either a mag def, or cal def. Any info or ideas are much appreciated.


VEG NUTES:View attachment 3579003 View attachment 3579002 View attachment 3579001
AN sensi grow 2 part 2mil/gal
Cal Mag 1mil/gal
b-52 1-2 mil/liter
Silica blast 2mil/gal
SM-90 1-2 mil/gal
AN MET Bloom tea 1mil/liter
cannazyme 10 mil/gal

Bloom Nutes: (Same as veg but i add a few more things)
AN sensi bloom 2 part 2 mil/gallon
Big Bud (after week 2) 2 mil/liter
Overdrive (after week5) 2 mil/liter
Bud candy (2 mil/liter)
(everything else listed in the veg schedule, minus the Sensi Grow)



The pictures shown are 18'' tall plants still vegging.View attachment 3578996 View attachment 3578997 View attachment 3578998 View attachment 3578997 View attachment 3578996
Click to expand...

CannabisPoster4000.jpg
 
Connoisseurus Rex said:
Looks like K deficiency or light burn.
Seeing as it's at the lower leaves, most likely K def.
Click to expand...
I will definitely look into this!
Terry385 said:
one pic is root rot http://www.growweedeasy.com/marijuana-symptoms-pictures
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I don't think it is root rot bc the roots that have poked through the HUGO's are white as can be, and covered in hairs.

The top half of the plants are green and healthy, but the lower leaves keep getting more yellow and burnt on the margins.

Ill take a few more pics tonight and post them.

Again thanks for the info!
 
a mongo frog said:
I could be wrong but looks like broad mites are reeking havoc.
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I thought it could be broad mites, I've applied AVID twice. As well as looked under many leaves with a 100X microscope. No broad mites as far as I can tell. Is there anywhere else on the plant they would be hiding?
 
Dub1620 said:
I thought it could be broad mites, I've applied AVID twice. As well as looked under many leaves with a 100X microscope. No broad mites as far as I can tell. Is there anywhere else on the plant they would be hiding?
Click to expand...
Internodes. Not on the leaves.
 
Dub1620 said:
I am going to go dig in with the scope now, Thanks!!!!
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i been dealing with it for awhile now you won't see them
WP_000716.jpg WP_000717.jpg the damage won't go away but new growth look good after weeks of dealing with it in veg.this looks ok so far last one got taking over in first two weeks of flower whole plant
they really suck don't know if you got them killed or not... if you take cutting for a clone it well have them also.. it spread to other plant that was next to this one in veg.
 
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I'm still going with potassium deficiency. Yellow leaf veins, mostly lower growth, and the classic burn around the outside of the leaf.

Try a light foliage feeding of K. If the new growth starts to perk up, then you'll know.

The reason I suggest a foliage feed is because you may have a slight lock up. That alone could be the issue because your stems are turning purple too.

If all else fails, flush with 1/4 strength nutes and work your way back up. If she starts looking hungry and the new growth starts perking up... There's your sign.
 
Potassium(K)
Another issue similar to Nitrogen and Phosphorous deficiencies, Potassium deficiency has similar symptoms and include, curling of leaf ends as they die and stretching of the plant. This can be cured by adding a organic fertilizer containing Potassium. Another fix would be to flush the plant with water and half the normal amount of a balanced NPK (Nitrogen, Phosphorous, Potassium) nutrient solution.
Potassium.JPG

K is the problem me thinks, hope it helps :bigjoint:
 
Do you have any idea of the EC/PPM of your base water and of your feeds?Or do you just go by measurement?I'll go with nute burn and not deficiency. Multiple issues here including lower and the newer growth both. Weird little new tips look like micros are short while everything else went long.
 
hotrodharley said:
Do you have any idea of the EC/PPM of your base water and of your feeds?Or do you just go by measurement?I'll go with nute burn and not deficiency. Multiple issues here including lower and the newer growth both. Weird little new tips look like micros are short while everything else went long.
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That's what I was thinking until I saw the rest of the symptoms. I think it's more locked up than nute burnt but it's hard to tell without taking the measurements. K will fuck up new growth because it will inhibit the micros... All of them.

In any event, I still think a flush and reset is in order. PH could have risen too high from feeding as well. Especially without regular res changes.
 
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