Leaves Drooping Help!

A buddy of mine just had to move to he gave me his plant. Ive got it under a light 12 hours a day and 12 hours off. The leaves are drooping downwards and the tips are starting to get brown and curl. This is my first plant any suggestions? Heres some pics below.

Plant Abuse Chart and Photos by Nietzsche start right here...rob

if i were you id turn the lights on for 24 hrs a day. and hope the plant fixes itself. then u can flower it later when its much larger. if u continue flowering your not going to have any buds to smoke.

i cant pin point your problem with the info provided.

That thing looks dry as fuck too. And too stretched. More/better lighting and some water!