This is my first one so bear with me. My plants are about 4 weeks old from seed. All but 1 look healthy. Nice dark green, seem to be growing pretty fast, (kinda hard to tell seeing as how I look at them about 3 times a day) lots of new growth. One of my plants looks healthy in every way but the larger fan leaves are beginning to curl under. They don't feel dry, no yellowing. Used miracle grow organic potting mix, perlite, and fed blood meal when transplanting about 3 weeks ago. Using 2 150 watt cfls and 1 40 watt cfl. My temp stays around 78 F. Any help would be greatly appreciated.