Blue Dream strange toxicity/deficiency I have never seen before

[epicseeds]

1 out of 6 plants, all of which were taken from the same mother are showing a strange toxicity/deficiency.

Outer leafs are a normal green color, the same color as the other healthy plants. In the middle there is a yellow/light green stripe. It is kind of like a reverse copper deficiency.

Only this plant is showing this symptom and is using the same medium and nutrients.

It appears that it mostly effects leafs that have good light exposure (light is ~24in away).
The plant is a little stunted compared to the others.
Temps are 70-78F during day and 65-70 at night

MEDIUM: 100% coco
NUTES: canna coco A B / cal-mag

 

[AMATOXIN]

I have also had this issue on several different strains. Curious if others have also, I haven't been able to figure it out.

I am also in coco Dtw but running jacks, calcium nitrate, mpk, Epsom salt. Plus teas

It seems to appear in fast veg growth and early flowering.
Could it possibly be a iron, sulphur thing? As the leaves age it seems to disappear for me.

 

[moses wellfleet]

1 out of 6 plants, all of which were taken from the same mother are showing a strange toxicity/deficiency.

Outer leafs are a normal green color, the same color as the other healthy plants. In the middle there is a yellow/light green stripe. It is kind of like a reverse copper deficiency.

Only this plant is showing this symptom and is using the same medium and nutrients.

It appears that it mostly effects leafs that have good light exposure (light is ~24in away).
The plant is a little stunted compared to the others.
Temps are 70-78F during day and 65-70 at night


View Image

View Image

View Image

MEDIUM: 100% coco
NUTES: canna coco A B / cal-mag

Coco is not my medium but I have seen similar symptoms in soil from overwatering!

 

[epicseeds]

Just wanted to update, harvest was great (best ive ever done actually 650 grams / 1000w no c02). I think it is just this pheno of BD that does this.

I have since switched to jacks + calnit + epsom and the plants from the same mother as the above pics are doing the exact same thing.

 

[Space Case]

That is a Zinc deficiency, caused by either too much Iron in your water or coco, or too much Phosphate in your nutrients. You also look like you are Manganese deficient. Get a good trace mineral source and foliar feed and root drench with it.