Hey thanks for reading the post and I appreciate the help in advanced! So this is going to be my first real grow, by that I mean I have taken the time to really research the necessary materials and spent a good bit of money on two 1000w great white reflector with sun system 10 ballasts, two Value Line Centrifugal Fan (450cfm for a 9x10x8 room) one for incoming and one for outgoing air, enough duct tape and black and white poly plastic covering for the walls and ground. I also have some other things ozone generator, insulated ventilation ducting, and an atmospheric control unit and light timers. The only things I have not purchase, and I intended to make a decisions once I have picked up my clones, is soil and nutrients. Most likely going to use big bud or bud candy and final phase from advanced nutrients. I am going to by mature clones in the teen stage so I can go streight into flowering. Will these nutrients be enough for the plnats flower cycle or should some additional nutrients be added to the soil or water? Also I would like to vent my lights, should I have the ducting tube run off of the incoming air tube/fan or outgoing tube/fan? I will be using a sativa based strain "Blue Dreams" any idea what kind of yield I can expect per light, I am asumming 1.5-2.5 pounds/light with 20 plants per light (40 total.)