Three-in-one function: vacuum cleaner. Aquarium floor cleaners have a narrow front tip that can easily absorb mud and dirt. Gravel cleaning. The vacuum 3D filter basket prevents the suction of small fish and matrix. Change the water. Built-in dual air chambers work with air pockets, very sturdy, easy to use, no suction Working principle: Manual air pump. Our upgraded crumb vacuum comes with a handle. This gives you more room to work and makes vacuuming more comfortable. Get the strongest suction power. Inside the gravel cleaner there are two enlarged air chambers for faster suction. Easy to use: Press the trigger several times to ensure that the water inlet pipe is filled with water. Look at the sewers. After the water runs out smoothly, you can stop squeezing. Suction power should return automatically. When the water flow stops, press and hold until the water flow is steady, it effectively sucks the aquarium slime Wide Application: The aquarium dirt vacuum cleaner suitable for all types of aquariums. It is suitable for large and small aquariums thanks to its elongated two-part inlet tube, and can be extended as desired.