Fluval Self primer assembly is suitable for: -Fluval 104 External Filter (A200) - Fluval 204 External Filter (A205) -Fluval 304 External Filter (A210) - Fluval 404 External Filter (A215) - Fluval 105 External Filter (A201) -Fluval 205 External Filter (A206) -Fluval 305 External Filter (A211) -Fluval 405 External Filter (A216)