The TFH Tabletop Hurricane Tube is the answer to wanting a maintenance-free bubble tube at an affordable price. Our unique design uses the same durable acrylic tube but with no water which means no maintenance. The inner tube funnels the specially-coated styrofoam beads up through the tube simulating the calming effects of water. The LED light smoothly transitions through the colors maintaining focus and attention. This tube has a jack for a 1/4” Switch which can be programmed to stop and re-start the fan (switch not included). Being 36"H and only 4" in diameter, it's the perfect size for any classroom, clinic or bedroom. Adult supervision is recommended.