Have a look here to get an idea of this amazing concept https://youtu.be/YE1meM-Q9JE

Backflow Incense Burner is specially designed to create smoke that cascades downwards, pouring dramatically down the tower with a stunning effect that will catch your eye.  Once you have lit your incense cone, it will begin to smoke, the incense is heavier than air and it will fall dramatically in swirls and twists, through the hole and down over the item, to pool at the bottom. It is incredible to watch and very relaxing. Our Backflow Incense Burners' are suitable for home, office, teahouse, meditation, yoga studio.

Please note: In order to create the smoke cascade effect you will need to use backflow incense cones which you can view here.