Yellowing and curved up leaf(ves)

E

Epixi

Member


I don't know why is this happening. Looks like the beginning of nuteburn but the thing is i water all my plant (5 plants) with the same solution, and he is one of my stronger plants.
Any opinions?
It's the left leaves.
 
steeZz

steeZz

Well-Known Member
Are you using R/O water to feed your plants?
Looks like the beginning of a magnesium deficiency.

just my 2 cents
 
G

Grewdat

Member
It's some sort of a deficiency. Probably Magnesium as SteeZz pointed out and probably caused from lockout.

I'd make sure to check the ph of the runoff after you water and adjust accordingly.
 
E

Epixi

Member
Well, i water them with mineral water with 2ml/l of 8/2/6 nute. Next wattering i add 1ml/l of 2/6/3.5. Doesn't say on the bottle if there is Magnesium in it or not.
So what are my option? (don't have pH meter, unfortunetly)
If Mn is magnesium then we're alright, cuz i have a multi-purpouse nute. 0.001% is ok?
 
D

Destillat

Active Member
cannabis is notorious for it's need for magnesium. for this reason many soil growers will supplement with calmag. it's basically calcium and magnesium. I do agree that it is a magnesium deficiency.

Treat your deficiency with two teaspoons of epsom salts (magnesium sulfate) per gallon of water. Continue until you get calmag or the deficiencies disappear. Next grow add fine dolomite lime to your soil. The finest you can get
 
Stride

Stride

Active Member
Epixi said:
Well, i water them with mineral water with 2ml/l of 8/2/6 nute. Next wattering i add 1ml/l of 2/6/3.5. Doesn't say on the bottle if there is Magnesium in it or not.
So what are my option? (don't have pH meter, unfortunetly)
If Mn is magnesium then we're alright, cuz i have a multi-purpouse nute. 0.001% is ok?
Click to expand...
Mn is not Magnesium. Mn is Manganese. Magnesium is Mg. Forgot your basic chemistry bro? ;)
 
E

Epixi

Member
5 years since i've been to school :P (note i had B+ in chemistry).
So epsom salt, got it.
Now i have new problem, sides of leaves start curling up, no discoloration. It's heat stress right?
 
dirtysnowball

dirtysnowball

Well-Known Member
haha the curling is Mn manganese deficiency, and the yellow spots is Mg magnesium deficiency.

definitely ph issue since these to nutes are closely related
 
dirtysnowball

dirtysnowball

Well-Known Member
its too alkaline. because if the plant blocks out mn then i cant absorb mg, and your leaves are pretty light green.... al because your ph to is high
 
max316420

max316420

Well-Known Member
Get your water ph'd to around 6.5 and get some calmag or epsom salt. 1-2 feedings should take care of it.
 
E

Epixi

Member
Alright, so i should switch my tap water? is that it?
I bought a get nute, 10/7/9 with a bunch of growth increasers and allot of metal elements.
So should i add this in the water, or water with my regulars nutes (BioBizz), or both?
 
max316420

max316420

Well-Known Member
Yup don't worry about all the additives. Just gets confusing and you won't see much of a difference in veg anyway
 
Kingrow1

Kingrow1

Well-Known Member
max316420 said:
I agree magnesium def... Classic case of it too. That pic should be in a guide
Click to expand...
Good idea with the pic being in a guide.

I use biobizz and live in North Wales, if your similar cal/mag is definatly needed, my tap water is very pure. Peace
 
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