This is my custom built underwater waterfall using air and sand. There are other videos under my name of just the tubing and showing how it works. This is just the finished project. Prototype is here ...
by 5-Minute Crafts KIDS
by maynterest channel
by Little Crafties
by Makerj101
by click2 papercrafts
by Talia Christine
by Ngan Art Nguyen