Just finishing up my new box, some people say that a rubbermaid bin isn't big enough for a grow... I'm gonna do half of a rubbermaid check it out im trying to reveg my little plant i just chopped, i doubt it will live, but lets hope.
He can use the "Stick poles with string in the ground" method. This teaches the plant to grow out and not up. I used to do 3 rubber maids on top of each other. The problem I had was it overheating. I used a carbon vent, but still got a smell. Also, Your lights might burn out your sprouts. Good luck.
Also, your going to want to use Mylar sheets instead of Tin Foil. Tin Foil keeps in heat...and doesn't reflect well. Your better off painting the inside of it all white. Also I see that one of the lights is waaay to close to your plant. It's going to want to grow up and to the side...toward that light. Be careful. You might also want to add anther fan on the other side.
I'm pretty sure this one is fucked lol I'm just testing the box, and yeah, I'm having trouble with overheating... I took out the 3rd bulb and I tried to make it super air tight, but i guess the tin foil is keeping in a lot of the heat, or my outtake fan isnt strong enough..