Looks to me like an iron deficiency, and i second the notion to raise the light a bit.....

-good luck:thumbsup:
biff Reviewed by biff on . Yellow brown spots on leaves... This is a shot I took two days ago of a plant. Upon a friend's recommendation, I ceased using my nute program and dumped my solution entirely, using only water and hygrozyme, ph'ed to 5.7. Now, some more spots started appearing on one of the newer leaves yesterday, just isn't as full-spread as this one was (this is on the first true set of leaves). I'll try and give as much info as possible. Room is kept 74-77 degrees at all times, plenty of air circulation, humidity is 55-59%. Light is Rating: 5