All Betta uv Lamps Betta Replacement UV Tube 13w also fits Betta 2000uv Canister filter MF666£11.49 Betta Replacement UV Tube 7w also fits Betta 700uv and 1050uv Canister filter MF664£9.99 Betta Replacement UV Tube 9w also fits Betta 1620uv Canister filter MF665£10.99