Hey Im a first time grower and I use a Aerogarden to grow...basically just to smoke my own plants for free. Anyways, my plant is probly 6 weeks now and I dont really know what is wrong with it. The leaves are browning and drooping a little and starting to die...only the bottom ones, I thought it was a heating or light burn problem but I think I might be wrong...Ill leave it up to you guys to help me diagnose my plants problem. Here are the pictures, thanks.