your roots are going to get root bound in a pot that size, you realy need a larger one.
ah, is it auto's or photo's your growing and what size space do you have to grow in?
If you're flipping quick you will be ok but will have to feed multiple times per day. Small pots are fine for coco. Of coarse a bit bigger would help but is not necessary. Don't listen to people who don't grow in coco
