[damnpolice]

Yo

my biggest plant has had a few leaves like this, some completely yellow, i have cut them all off.

looks like nitrogen def to me but would like a second opinion.

The leaves were located half way up the plant, and the top ones are much darker, although a few lower ones are slightly yellow still - i upped my ferts a bit and it seemed to stop.

Also, the yellow seems to appear only in areas where the leaf is in contact with the light...

peace