Function and shape are, as is customary at EHEIM, an overall concept and well-thought out from top to bottom. The characteristic multifunction handle combines 3 functions: carrying - opening/closing - priming. Faulty operation is prevented by the red safety adapter. The supplied shut-off valves are rotating. Thus the Eheim Ecco Pro Canister Filters can be installed more flexibly and are easier to use. The hose and filter can be connected safely and easily. The flow rate is adjusted at the drain cock. EHEIM high performance ceramics, i.e. high quality ceramic components, provide for very quiet continuous operation characteristics. The high quality filter canister is equipped with practical filter baskets. Filter baskets are easy to take out and to fill.