Easy to use: Simply insert the Gravel Vacuum for Aquarium filter into the aquarium and gently press the pump. Clean stains by inserting the filter into the gravel and squeezing the pump to create a siphon, then lifting slightly so as not to remove the gravel from the aquarium No mess closing value: Our aquarium vacuum cleaner has a shut-off valve which ensures that water does not spill onto the floor after cleaning is complete. The aquarium siphon pump can be used around carpet without fear of spilling water. Built-in gravel/fish filter: Easy flow adjustment so gravel and sand stays in the tank and doesn’t get siphoned off. Convenient: you can easily remove it in pieces and clean it. instructions 1. Place the water changer in the aquarium. 2. Place the water outlet at the other end of the water pipe into the bucket. 3. Open the control valve. 4. Gently squeeze the air cavity with your hand until it automatically releases water. 5. Lower water inlet to suck fish manure and feed residue
