VAYINATO (Blue) Biochemical Filter Foam Sponge Cotton Media (50 * 50 * 2 cm) Sponge Aquarium Filter  (Biological Filtration for Salt Water and Fresh Water)

100% brand new and high quality. Very Easy to settle & use to filter water in aquarium to build happy environment for your fish aquatic. Can be cut in different size as you need Get the sponge into water before put it into the filter box, so that keep the water going smoothly. Can be used repeatedly after cleaning Moderately hole, can cultivate high density nitrifying bacteria This Fish Tank Biochemical Filter Sponge can be used in sea water tank, fresh water tank, aqua-plant tank Specification: Color: Blue Size: 50x50x2cm (LxWxH) Reminder: 1. Soak the sponge in the aquarium water for 5 minutes before use, by doing this will help nitrifying bateria colonise easier. 2. Always use aquarium water under room temperature to rinse clean the sponge, never use hot water. 3. Suggested to clean it every month. Package include: 1pcs Aquarium Fish Tank Filter Sponge