Sera Filter Bag 40x20cm

The Sera Filter Bag 40×20 cm is a robust, reusable mesh bag designed to hold loose filter media — such as activated carbon, bio-rings, filter wool, or ceramic media — securely in your aquarium filter, sump or canister. Its generous size makes it ideal for larger tanks or systems with substantial filtration needs, helping keep media contained and preventing granules or fibers from escaping into the tank. The bag is compatible with both freshwater and marine setups, and makes media changes easier and cleaner by allowing simple removal and replacement without mess or spillage.