Later on in the summer I am going to make a grow chamber. I am starting to plan it out right now. I want a regular chamber 3 feet wide, 4 feet high. I am trying to find what to make the plastic covering out of. Can I use thick plexi glass for the walls of the chamber with wood in the corners? So the plexi glass would go into the wood. Or should I use glass? Can someone please tell me how to build this chamber?