How many autos in 3x3 grow tent

Just got some think different and critical mass and wondering how many full grown plants can I fit in a 3x3 with Sunleaves pioneer T5 8bulb unit. 3 gallon pots also

With a 3 gallon nursery pot, you are looking at about 10 inches in diameter. With that said, you are looking at 9 plants. This will also give you a couple inches between the lips of the pots, giving the critical mass a chance to bush out a little bit. Hope this helps