3 by 3 is your best bet. Make it 4-4.5 feet tall and have the light sitting on top, it keeps box cooler. Cut a hole on the top the size of your hood. Keep your light 18-24 inches from plant tops. If you have a cool tube you can get a little closer.

Yes try to find plants that dont glow much in the floweing stage. LA confidential only adds a foot in flowering. Flower at 1 foot there done at 2. 1 foot of pot 2 feet of plant 1.5 space from light to plant = 4.5 feet.

You can gain several inches with wider pots, cool tube or having few large plants bushed out over a wide area. Plants would be 2-3 feet tall but they are layed out. Don't forget to top ur plants, your going to need it.

hey, hey - hey, hey - smoke weed every day.