Im quite sure there are a couple of tutorials on here how to build a cheap grow box. Papabear I think is the user name very good thread and its very very cheap.I'm going to make a grow tent out of PVC and Mylar. In a 4 x 3 x 7 room. Does anyone have any idea? I'm going to use 2 400 watt hps. And I'm going to grow scrog