Hi guys, here is yet another problem I have encountered with my little plants, I left the lid on the greenhouse box (this one Opentip.com: Jiffy/Ferry Morse Seed Co Jiffy-7 Heated Greenhouse - 5035) because I thought that is what I was supposed to do and left it under the flo's because that is what I thought you were supposed to do when they sprout...Anyway, on of the plants had a black leaf on it that I took off, and the other one had one leaf hanging ready to fall... I'm not sure if this is because I left the lid on and it got too humid or because they were over nuted. Any ideas? Oh and sorry I am such a noob.