Leaf issues

[Bob1893]

I'm 4 weeks into flowering why is this happening to the leaves




Its happening to the leaves at the top

 

[Hugo Phurst]

Check your Ph

 

[hotrodharley]

Calcium deficiency. Predictable week 4-5 in flower.

 

[Bob1893]

Calcium deficiency. Predictable week 4-5 in flower.

What do you recommend to solve this

 

[J2M3S]

What do you recommend to solve this

 

[hotrodharley]

What do you recommend to solve this

Beat it next grow by adding cal mag to the first feedings after you flip. The demand on calcium and magnesium both is very high the first few weeks because of stretch mostly.

 

[visajoe1]

probly need to feed it. blindly dumping calmag on it isnt the answer.
what nutrients are you using? medium?