Aiight, I have one plant that i wanna grow indoors. It is my tallest plant it measures out to be 2 feet 1 inch and its topped, Well i was wondering if one 100 watt HPS light get the job done or would i need more wattage? I asked the guy at Home Depot if they carry n e 400 watt HPS lights and he laughed at me and said, its for the good shit right,lol. He new exactly what i was doing and told me where i can find one at, he also mentioned to tell them that i was lighting up a football feild,LMFAO.. Im a lil worried about me electric bill! I heard people come up every so often to check on it and if its to high then they can come in a search, is this trOo?