【3 in 1 Function】: ① Dirt suction. Aquarium gravel vacuum cleaner equipped with a duckbill suction inlet attachment, and it is easy to suck up the excrement. ② Sand wash. Aquarium siphon with 3D filter net, protect your loving fish and small gravel from aquarium suction. ③ Water change. Built-in dual airbags, atmospheric cavity, good resilience, effortless operation. 【Working principle】: Manual compressed air. The improved part is equipped with a handle, which has more operation space and saves labor and convenience, testing the fastest speed is to press 7 times. The sand washer has 2 thickened inflatable cushions inside, which can pump water quickly. And using ABS PP materials, extrusion resistance, don’t worry about airbag damage and leakage. 【Easy to use】: Press the siphon switch repeatedly of the aquarium siphon vacuum cleaner, make sure the inlet tube part is full of water. After the water flows out continuously, you can stop pushing and observe whether it will automatically. If
