ISTA- Aquarium Ceramic Internal Filter Features: 1.Use air pump to create circulation, absorb dirt and build nitrification. 2.Covered with filter sponge, the bottom is ceramic ring to clear water and builds nitrification system. 3. Suitable for breeding Angle fish, cichlid, guppy and small fishes. 4. Can also be used as a second backup filter. 5. Made by natural clay, no fading problem, doesn’t affect water condition and can improve water quality. Size: 7x7x12cm (included outlet)
