Sicce Multi Multifunction Aquarium Pump, Designed for submerged and in-Line use (Mod 800 Excluded)MULTI PUMP: MULTI pumps have been designed for both submerged and in line operations (only submerged for the MULTI 800 and 1300). They guarantee low working temperature and low energy consumption. GREAT FOR BEGINNERS: The Sicce MULTI pump is designed to be the perfect entry pump. With 5 different sizes, there is sure to be a perfect fit for whatever gallon fish tank you elect to use. PRODUCT DETAILS: The MULTI 4000 features a 1 threaded inlet and