FEDOUR 175GPH/400GPH Aquarium Canister Filter, 8W/15W Fish Tank External Filter, Aquarium Hang on Filter with Biochemical Sponge, Ceramic Balls for 10-180 Gallon Fish Tank (175GPH)
- ...cotton, 1pc black biochemical cotton, 1pc yellow density cotton, 1pc blue physical filter cotton, and 1pc white physical filter cotton, effectively filter out impurities in the water. Comes with 0.7lb (0.3kg) ceramic balls,if you need to use these ceramic balls, put them in the space below. A total of 5 layers of filtering, excellent filtering effect..