you can leave the light on for 24 hours during veg. but during the flowering stage you want 100% darkness. and to fix what he said, you cant get a male plant because it wasnt 100% dark, you will end up with small buds or a hermie or it wont go into flowering if the light leak is alot. plain and simple, but so far your doing a great job. and during flowering for bigger buds try to get a 100% darkness no light leak at all equals bigggg buds big big big buds. hahahahahhaah massive bud, real big, big big