Description: Quality Design: The inlet filter sponge captures floating debris and fine particles, prolongs the service life of the filter medium, provides efficient water flow, reduces clogging, and achieves long-lasting filtration. Product Features: Made of high-quality filtered foam, absolutely safe for your fish, please note that these foams are pre-filtered sponges, so there is only one opening and the bottom is closed Practical: Highly porous fine sponges that prevent small or weaker organisms from being sucked into the filter, provide a lot of surface area for useful small organisms to grow and reproduce, enhance biological filtration and increase dissolved oxygen levels in the aquarium. Easy To Use: Place the sponge cover directly over the filter's water intake to give your fish pets a safe habitat! These cylinder pre-filtered sponges are suitable for all shrimp tank owners and anyone else with small fish in their tank, providing them with a safe environment. Easy To Clean: Removed once a month and rinsed in the aquarium and put back in place, your filter never clogs and is reusable. Note: Actual product color may vary from the colour you see on your screen. Specification: Type: Filter intake sponge Size: 6 * 3 * 1cm, 8 * 4 * 2cm Material: Sponge Color: Black Weight: 15gm, 20gm Features: High quality Easy to use Durable Lightweight Efficient filtration Long-lasting Washable and reusable High density Reduce clogging Widely used Package Content: 10x Filter intake sponge