Hey I bought a grow tent set up and gotta say pretty happy with it! Now this is my first grow but tent itself was cheap around $90 and it's 4x4x6 just enough room for 3 full size plants. Had to get the ventilation and light system which got a bit costly but it'll be worth it in the end. The tents are great for dark periods and easy to assemble. U could make ur own box but you'd still need all the vent stuff. Tent is a good way to go imo.