Description [Adjustable Flow Rate] The knob on the oxygen tube can manually adjust the gas flow rate of the aquarium filter, which can adapt to different usage scenarios. The maximum flow rate can reach 1000 L/H. [Physical Filtration] Filters with large-capacity filter boxes (sponges and biochemicals) are used for multi-layer filtration. It automatically absorbs excrement, debris, and residues in the water, creating a healthy and clean environment for your fish or turtles. [Super Quiet] The sound is less than 35 decibels, the built-in aquarium filter adopts a high-quality motor design, provides a quiet working environment, and you can use it in the bedroom. [Internal Aquarium Filter] Power 15W, product dimensions 7.2 x 6.5 x 22.8 cm. (Power cord length: 80 cm = 31.2 inches), weight: 480 g. [Scientific Structure] 1. The suction cup sucks the bottom of the aquarium and can be used as a low-suction pump. 2. Disassembly and cleaning, easy to disassemble without tools, replacing the filter