I wouldnt think you need anything larger than 12-14 inch. I use an acrylic 12in. I do start to feel the DMT coming on strong with 30mg+ doses due to the fact the vapor has reached my mouth and lungs before I carb it. So If thats something you want to avoid, then I would go with a little bit longer length. I have taken 45mg in one hit and a buddy of mine did 60mg in one hit.

I do not heat up the water in my vopobong. Nor do I chill it. It simply isnt needed when using water. i seriously dont even feel anything going into my lungs. It doesnt feel warm, cold, or anything. Im considering trying to use only ice with NO water. It's possible that the water is stopping some of the DMT from leaving it. BUT I have had STRONG experiences with 25mg.

I have actually been wanting to do this for some time now. I've always like the glass on glass idea the most. However for price reasons, I'm going to try the original VG first since it will screw onto the aluminum bowl stem that came with the bong.

So if i were to use freebase DMT could i put it directly onto the carbon rocks?

Whats the thing on the left? the little tube thing.