Two Types of Nozzles: Shorter Nozzle is for drainage & The Longer Nozzle is for cleaning fish leftover food, droppings and fine gravel / Takes the Waste out while Replacing the Water; Will not Hurt any Aquarium Life when in usePatented Unique Pump Filter Allows dirt and Sand to be Discharged along with waterHand Pump to Initiate the Siphon to Start Transferring Liquid from One Receptacle to AnotherIdeal for use when replacing water in aquarium tank without damage to the aqaurium lifeFast Tranfer Rates: 1.5 Gallon per Minute Total Length: 64" Suction Tube Length: 51.5" Main Material: Polyethylene, EVA and PVC (BPA Free) Suction Tube Inner Diameter: 1.5" Discharge Tube Length: 5.4"