Yellowing and curved up leaf(ves)

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.

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

just my 2 cents

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.

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?

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

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?

5 years since i've been to school (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?

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

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

View attachment 1774294View attachment 1774295

I agree magnesium def... Classic case of it too. That pic should be in a guide

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

This is caused by your water being to "pure"

nice gifs!

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?

that stuff with 10-7-9 will be perfect by itself, its almost perfectly balanced!

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

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