I think it might be a nitrogen toxicity issue Not sure

MM3

Active Member
I have been looking in the plant problems thread and came to the conclusion it is a nitrogen toxicity, not 100% sure my brother thinks it is a mag def or iron def.
There are brown spots on a few leaves, more so on the bottom leaves. Some leaves on the bottom are also dried up and very brittle. Seemed to be happening on the side of the plant my intake was on more so then the other sides. The humidity seems to stay at between low 30%-50% (a wide range). Not sure how to keep it at 40%. Any suggestions comments and constructive criticism are welcome.

Thanks

Setup: I have a 400 w hps (2nd week Flowering)
6 in intake fan at the bottom of the room
6 in exhaust at the top of the room
 

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