Drdonanswered grow question 8 months ago For Autos - 4 is good Since you won’t have a lot of time to train.
I run photo period and I have done 3 and 4. If I veg three weeks longer and LST -3 plants I find my yields the same as 4
I find 4 works the best since I don’t need to veg as long.
Think your pack says three.