im not really that good with c02 i use candles, but 4lighting around the house compact floro's (they r the weird shaped energy saving bulbs)r probably the best u'll find unless u got an aquarium. if u do then the long floro's arer usually of a higher wattage and work great for vegging. if ur willing to invest then buy a hid, u can find these at hundreds of places online and are by far the best type of lights for flowering