sweetie, please read my college courses, located in my sig... you'll find everything you need to know in there, i don't know what a sun lamp is, but you need to get that plant back on 24/7 asap, and don't change it again until your plant is healthy, you're ready to flower, and you've read kp's cannabis college.

also, i'd give a good water flush (NO NUTES) because from your description, you've chemicle burned your baby. just water, and time, and she should be fine.

love, kp