5 in 1 function Water change: built-in double airbags, atmospheric cavity, good resilience, effortless operation Sand washing and raking: aquarium siphon with 3D filter basket net, protect your love fish and the small gravels from the suction of the aquarium. Suction: aquarium gravel vacuum cleaner equipped with a duckbill suction inlet attachment, and it is easy to suck the excrement Easy to use Repeatedly press the switch on the siphon, you can stop pushing after the part of the inlet tube is full of water, and water is continuously flowing out from the outlet pipe. Check whether it will be automatically. If not, continue to operate it until the water flows out automatically.Small debris will be washed away by the current.Please note that the water outlet must be at least 20 inches lower than the inlet when using Wide Application The kit is equipped with two 15.7 inch inlet tubes. The installation length can be selected according to the height of the aquarium. it is easy to install
