Use genuine Python brand replacement parts and accessories to ensure proper function of your Python No Spill Clean N Fill Aquarium Maintenance System. Includes 28" tail (hose) and a Female connector for easy installation to your Python No Spill Clean N Fill Aquarium Maintenance System. 10" Replacement Gravel Tube is an identical replacement for the unit included with any Python No Spill Clean N Fill Aquarium Maintenance System. 20", 24", 30", 36", 48", and 72" Extended Length Gravel Tubes upgrade your existing Python No Spill Clean N Fill Aquarium Maintenance System to ease gravel cleaning and water changes in taller, deep aquariums. Also great for convenient garden pond maintenance.