The only thing to consider is *how much water to put in it*. When I fill it to what the demo-video looks like, I didn't really get the smoke and instead of it staying inside the chamber I was watching it float out from the basin. It was bubbling, but I wasn't receiving the smoke. I LOVE it when I put about 2cm of water in it, just touching the internal pipe cylinder (idk what to call it, I just smoke lol) without it bubbling because I was getting all of the smoke.
Very smooth though, and it's cool to have the mouth piece some distance away from the basin.
This was a gift, and the person I gave it to was very happy with the gift!
It's a great piece.
Best Bubbler I have used in a long time!