you can use ice, its fine. i wouldnt use boiling water tho.

dont use crushed ice, the shards will get picked up by the smoke and you'll cut the inside of your lungs and bleed out and die. :thumbsup:
FlyGuyOU Reviewed by FlyGuyOU on . Does it hurt? Hey guys, just a quick question....a friend of mine suggested using ice and boiling water in my bong as it will make it smooth as well ice I guess lol. I've also heard that putting ice in will really hurt your lungs so what's the truth here? :hippy: Rating: 5