What size are you going with.
I am going with 2 in 2 gl and a test of a typical unwieldy plant in a 1 gl.
3 gl are huge horizontally. My present 3 gl has been a source of trouble maintaining the proper watering schedule. And, now, I know they have to be packed with soil so the sides are nearly sealed with the pot and fabric. Yes, bubbling is a good idea too.