Sparge Diffuser Back Catalog number: CTS-10984 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-12016 Compression Screw, 1/16", SS, 10/pk Price on request CTS-21463 Check Valve Cartridge, Ceramic, 2/pk Price on request CTS-10328 Optics Cover Window Price on request