how harmful is the gravity bong?

[Matt the Funk]

nah, man if anything it's better for your lungs because the smoke is filtered by the water.

if anything, take smaller rips so your lungs can handle the smoke easier.

there have been studies done that marijuana does not increase the risk of lung cancer. so no, you wont get cancer from this.

but for your lungs sake just take smaller hits

I don't think it filters the smoke at all....but for the most part you are right. I would take same size rips though. You probably won't get cancer from it, but you might have some adverse effects on your lungs/throat/etc. Maybe you should invest in a nice glass bong that can take nice big rips, or better yet, a vape.