Dark green leaves and brown spots.

Richard Drysift

Richard Drysift

Well-Known Member
Very hard to tell what it is in hps light. Looks like it could just be calcium rust; if you have not been giving cal-mag that might be a cause. More info might help; like what medium? What are you feeding?
 
B

Bluephish

Active Member
Medium is promix hp
I fed cal-mag 2-0-0 once
Fertilizer is N15 P6 K36 on a regular basis
Now just water the last few days
 
Dr. Who

Dr. Who

Well-Known Member
N way to high
K way to high

Spotting is due to Cal blocking by excess K
Dark green is the high N


Might leech the soil/media and resume with a feed NPK value of around 2-6-4 maybe 2-6-6...
 
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