Yeah I could go 2x4 I have plenty of room to go up aleast 6ft. I would like to keep it in a closet instead of a grow box. Do you think a 250w is enough for max of 6 plants? Also if i go with a 400w or 600w I am going to exuast the heat underneath my house do you think it will keep it cool enough to stay undetectable to helicopters I do live in Fl? I just dont think they would wast the time and money to bust a 2x4 grow room but whos knows.
Thank you