Up Aqua 4-in-1 CO2 Atomizer -All-in-one diffuser, check valve, and replaceable disc -Can be taken apart easily -Easy cleaning and maintenance Up Aqua’s 4-in-1 CO2 Atomizer s an all in one diffuser, bubble counter, check valve, and has replaceable ceramic disc. It can easily be taken apart for cleaning and maintenance. The replacement ceramic disc is UA-501 or D-501-A for ordering purposes. Important Info: All ceramic discs, tubes, or surfaces MUST soaked in water for at least 30 minutes before use. Warranty Info: All CO2 diffusers or atomizers are covered under a 90 day limited warranty.
