your going to have to give more info than that,there is only 24 hr in a day ,no really if you want bigger and harder buds and depending on the strain ,your lights can have a lot to do with it ,for instance 400 ,600 ,1000 watt lights all have there benefits and also you have all types of lighting that a lot of people have there on opinions of them all, the decision is yours . i use 2- 400 watt MH for veg and 2- 400 watt MPS for flower in a 7x7x8 room and i think they are good but others would insist on 1000 watt would be better .i grow my own medicine so quanity isn't that important to me ,quality is you feel me so again the decision is in your ball park .hope this helps