Not sure which part you busted. I replaced the cylinder column that busted with a jar the right size of Jalepenos from the grocery. You could buy plain lexan at home depot and cut and size it, if that is what broke. Air pumps are cheap at any pet store or at Doctors Foster and Smith on line. The only part I could not fabricate well myself was the fluid. Have now given up on it. Painted the fluid cylinders with a light coat of paint - 3 colors and used a 3 foot chasing rope light and controller from Novelty lights dot com to run up and down in all 3 tubes (About $20.00 witha 10,000 hour life expectancy) . Great effect, and no more frickin fluid, and air pumps.