Features 1、KEEP AQUARIUM CLEAN: Aquarium water changer is used to suck dirt, wash sand and change water to keep your aquarium clean. You don't need to touch the water with your hands. 2、SIPHON VACUUM CLEANER: Fish tank water changer cleaner features a siphon vacuum cleaner safety gasbag. Just pinch a few times and the water will flow out automatically. 3、OPERATING PRINCIPLE: Fish tank siphon cleaner works on the principle of gravity and when you use a gravel cleaner, the incoming water must be higher than the outgoing water. 4、EFFECTIVE SEPARATION: Aquarium siphon water changer effectively separates excrement and food debris from the aquarium, keeping the water crystal clear. 5、MANUAL OPERATION: Aquarium vacuum siphon water changer is easy to operate and manually operated. Easy to disassemble and assemble, convenient to use and store. Specifications: Item Type: Fish Tank Water Changer Cleaner Material: PVC Length: Approx. 1.7m/5.6ft Package List 1 x PVC Pipe 1 x Hose 1 x Water Inlet Fittings 1 x Siphon Accessories