i was thinking of how i could make an easy to make cheap bong, and i had a great idea, one of those huge ass poland spring bottle, a bowl (
http://omnilounge.com/detailview.cfm?product=1435), and then cut the top of slightly of the bottle so i can put in ice cubes, sounds like it be a pretty fucking sweet bong. and cheap too. anything i'm missing though? would i be better off making it with a smaller bottle, so i don't have to use as much weed? also where does the carb go? how far up?