Our Water Polishing Filter Bag is perfect for your marine aquarium cleaning routine. Measuring 4.72" x 5.9", this bag is equipped with a convenient drawstring closure for easy use. Made of high-quality materials, it is washable and reusable, making it an eco-friendly choice. This versatile filter bag is perfect for use with a pump and cycling through the water as you clean out your tank or sump. With its excellent filtration capabilities and durable design, our Water Polishing Filter Bag is a must-have for any aquarium enthusiast.