Pawfly Filter Floss for Fish Tank, Aquarium Filter Media, Aquarium Filter Floss, Polyester Filter Cotton for Freshwater & Saltwater, White Fiber Sponge for Filtration, 17.6 OuncesBrand: Pawfly Color: White Features: Efficient Mechanical Filtration: The high density fiber structure effectively traps visible debris, uneaten food, and fish waste without restricting water flowkeeping water crystal clear and creating a healthier habitat for your aquatic pets Easy to Use: No measuring and cutting requiredjust tear off the right sized sponge and place it in your filter chamber. Save time with quick setup and effortless replacement.