In that case I agree with Dutch 4 would be ideal 6 Max. I am a MMJ patient in CO and I grow 6 plants 3 veg and 3 flower I have ordered a 4x4x8 the extra height is because I prefer sativas and have 9 foot ceilings with one more tent to follow. So with 3 in each tent my girls will have plenty of room to grow and get good light all the way down.