ITEM NAME:Aquarium Water Changing And Gravel Cleaner Vacuum Tool With Filter Function P6N1 Aquarium Water Changing And Gravel Cleaner Vacuum Tool With Filter Function P6N1 (3 in 1 Functions) Changing Water, Wash Sand, and Decontamination. Sand Washing: Remove the impurities covering the dinas surface, in the meantime to destroy water vapor coated layer of sand to facilitate dehydration, and realize the role for sand washing and cleaning. (Warm Tips: Sand washing cup is used to clean sand, if you only need to change water, sand washing cup is unneeded.) (Multi-hole Filter Net) Multi-hole filter net built in water inlet to effectively prevent sand and stone, fish, water plants from being inhaled during water exchange; At the same time, let water in the tank, fish manure and other debris be discharged through the filter net, then sucked into soft pipe and drained out, so as to achieve the results of water change, sand washing and decontamination. (Leakproof Design) nut added at the joint for absolute seal, thanks to the lock of double nut so as to physically lock the connection point and no water leakage. (2-Minutes to Assemble and Pipe Clamp included) Easy to operate, effortless and labour-saving,2-Minutes to Assemble. The addition of water pipe clamp allows one-handed water washing. Adjust the screw on water pipe clamp to adapt it to the thickness of scores of aquarium wall. (Lengthened Hose and Premium Air Chamber ) Lengthened soft flexible pipe hose, suitable for all sizes fish tanks. Large air chamber has good resilience, resistance to extrusion, and come with anti-reverse piston. new elastic material with high/low temperature resistance and good elasticity. Adjustable Length and Free Extension: The matching telescopic short pipe can be adjusted for the required length, longer or shorter is adjustable. Regulating Valve: Water flow can be adjusted as needed to prevent sand washed away when water flow too fast. How to Use: 1. Place the water inlet of the water chan