From what I understand , on average 1 plant for a 5 gallon bucket, however 2 can't be harmful or degrade the production. So with that said. A 5 gal. Bucket holds 2/3 cubic ft. A 15 gal. Grow bag holds 2.0 cubic ft. If you do the math, 1 - 15 gal grow bag can hold 6 plants (in theory) but hell 4 would do fine.
Aloha
|