Brand New and High Quality. Name: 10D Aquarium Filter Sponge. Material: Polyester fiber + mesh ultrafiltration cotton biochemical cotton 3 layers. Color: As Shown. Size: 8*10/170*8/170*10/170*12/170*20/170*30/170*40cm. Thickness: 2cm(0.79in). Feature: 8-stage Filtration, Highly permeable, Washable. Package includes: 1*Reusable 10D Aquarium Filter Sponge. This 8-layer thickened aquarium filter pad is the best choice for aquarium filter floss. The 3-dimensional mesh cloth will trap larger particles, the ultra high precision cloth will trap fine particles, Activated carbon cotton, Nano bio sponge filter and Fiber bio sponge filter will filter out very fine impurities and germs. This aquarium filter floss has the best strength and is easy to clean. It can be cleaned multiple times. Our aquarium filter media is very suitable for freshwater or salt aquarium, this aquarium filter floss can be used as a fish tank accessory, pre-filter for wet/dry filters, sewage tanks, tank filters, reef tank, pond, fish and vegetable symbiosis systems etc.