This is my first time growing and I know she's petite, but you live and you learn. My question is when should I know she's done? And when should I add nutrients (if at all) I have fox farm big bloom, grow big, and tiger bloom. She's almost 8 weeks old. She's in a 5 gallon pot with 5 CFL's on her (3 2700k and 2 6500k) I'm going to add another 2700k today. Please help!