PVC also has the side effect of being poisonous and carcinogenic.....

and nochowder, i love that bong so much! how big is it? how much was it? i love the fuming!

and yeah, my friend had an 8 foot. i have a 4 foot(but with bigger diameter tube, it holds more smoke than the 5'x2" straight tube at my headshop(calcualted it...including water displacement), and i used to be able to clear that thing MILKED in one hit, i probably still could, but dont often put my lungs through that kind of abuse anymore unless im trying to get realllllyyy high.