DescriptionThis filter mini-cartridge is very suitable for small aquarium use,split easily and easy to clean. No independent power, with a single-hole pump may be driven; A pump received openings, directly to the aquarium use.Features- Colour: Blue. - Material: Plastic. - Size: 8x8x5.5cm. - Sand particles can block a large amount of water. - Sponge can absorb waste products. - Charcoal become clearer water. - Triple filtration system-filters cotton, quartz sand, activated carbon. - Bubble ejection stone in the fresh air will lead to clean water, give your fish - to create a healthy environment for growth. - Suitable for 10-60 cm sink, large fish tank filter oxygenation is only suitable for direct secondary use.