【3 in 1 Function Function】: ① aspiration of dirt. Aquarium gravel vacuum cleaner equipped with a duck spout suction accessory, and it is easy to suck the excrement. ② Sand washing. Aquarium siphon with 3D filter net, protect your love fish and the small gravels of the aquarium aspiration. ③ Change of water. Built-in double airbags, atmospheric cavity, good resilience, effortless operation. 【Principle of operation】: Manual compressed air. The enhanced portion is equipped with a handle, which has more operating space and saving work and brings convenience, testing the fastest speed is to press 7 times. The sand washer has 2 thickened air cushions inside, which can pump the water quickly. And using ABS PP materials, extrusion resistance, do not worry about airbag damage and leaks. 【Easy to use】: Press the siphon switch of the aquarium siphon vacuum cleaner repeatedly, make sure the part of the input tube is full of water.Once the water flows continuously, you can stop to push and observe
