Simple and practical fish tank filter tool, which is very suitable for fish tank or aquarium use, and very suitable for water purification in the fish tank. Therefore, a great gift choice for your friends who want to farm some pet . Features - Color: Transparent -Material:Acrylic - Size: 45.00X8.00X7.00cm/17.68X3.14X2.75in -Note:Suitable for aquarium walls with a thickness of 3-8 mm\0.11-0.31in. -Our product is of high-grade and can help you place the tool to increase the oxygen in the water. The external filter box of the aquarium is safe and efficient. -This filter box is a sewage treatment system that provides a large surface area for the growth of beneficial colonies. -The filter placing box materials are all immersed, and the bubble has a high dissolved oxygen content. -Reasonable design, easy to view the filter cotton and maintenance easier. One machine with multiple functions. Versatile aquarium accessories for pumping/filtering/oxygenating. -The multi-function design and craftsmanship popularity and practicality. Package list: 1 x Filter Box