i got a plant growin now indoors in a store bought grow house. the plant is still a bit young..about 5 or 6 weeks old, appx. 6 or 7 inches tall, with about 6 or 7 internodes. i just started on nutes yesterday, since its about that time to do so. how tall do you fellow green thumbs let your plants get, on average, before switching to a 12/12 photoperiod for flowering?