The Python 25 ft. No Spill Clean & Fill can work with your faucet to siphon water from your tank directly into the sink, making water changes a breeze. However, if you choose to not use the faucet to create siphon, you can use the included Stressless Siphon Starter to create siphon. It also can refill the tank with water from the faucet (freshwater only) for ultra-quick water changes. For saltwater, fill a container next to the aquarium to prepare the salt mix. This is a completely ready-to-use system. It attaches easily to any siphon with the included 1/4" and 1/2" adapters. Includes: Gravel vac with 25 feet of hose, Python Squeeze, Faucet and garden hose connectors,10" gravel tube with valve and connectors (for deeper tanks you can also purchase a 24", 36" or 48" Extended Length Gravel Tube). Made in the USA The Python 25 ft. No Spill Clean & Fill can work with your faucet to siphon water from your tank directly into the sink, making water changes a breeze. However, if you choose to not use the faucet to create siphon, you can use the included Stressless Siphon Starter to create siphon. It also can refill the tank with water from the faucet (freshwater only) for ultra-quick water changes. For saltwater, fill a container next to the aquarium to prepare the salt mix. This is a completely ready-to-use system. It attaches easily to any siphon with the included 1/4" and 1/2" adapters. Includes: Gravel vac with 25 feet of hose, Python Squeeze, Faucet and garden hose connectors,10" gravel tube with valve and connectors (for deeper tanks you can also purchase a 24", 36" or 48" Extended Length Gravel Tube). Made in the USA.