The bad thing about ice bongs is the ice catches suspended resin/oil/smoke etc thats why the ice looks like it has boogers and shit all over it after a few hits. The idea I heard behind cold water bongs not freezing but damn close is the colder water can absorb and redistribute oxygen atoms better..I guess it cleans better or helps hold your hit longer etc..dont know if I buy this claim but its possible....either way your bound to end up:stoned: