Brown spots on leaves

[Tampatoker]

Any ideas on what these brown spots are about 5 weeks into flowering? Buds seem to be coming along well with emily's garden nutrient system but 5 or 10 leaves a week do this weird brown spotting thing and die.
Calling all gurus.
:dance: :dance: :dance:

[YaddaYaddaYadda247]

Looks like over-nuting to me.