How do you use the bubbler in grav labs?
How do you use the bubbler in grav labs? To use the Grav Labs bubbler, put water in the down stem through the opening in the bowl. The amount of water affects the output that you get, so it is up to you to experiment with this part. What is a grav bubbler? The GRAV® Hammer Bubbler is 4" tall and made on 32mm tubing. Its fission downstem diffuses smoke through water, and its feet stabilize the bubbler between uses. Why are Grav pipes so expensive? GRAV uses the finest borosilicate, a type of glass with a high silica content...