yeah, i just unrolled the one thats curling, and the tip is dried out and crumbled.. The rest of the leaves are ok and the other plant's fine. U guys think it's either overwatering or too much heat? I put my hand at the top of the plants, and they felt a bit warm but not too hot. I moved the light slightly away anyway just incase. Thanks psycho. And i'm going to get a moisture guage, as you others have said. Thanks a lot dudes, i'll be sure to post progress. And hopefully after christmas, have pics to post.