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.