Bio-Clear replacement cartridges for Marina Slim Power Filter
Ideal for goldfish, they contain zeolite and Ceramitek for optimum filtration
Zeolite effectively absorbs toxic ammonia and reduces stress on fish in your tank
Ceramitek, a highly porous, ceramic biological filter medium, optimizes biological filtration to support the growth of good bacteria
These genuine replacement filter cartridges are specifically designed for use in the Marina Slim S10, S15 or S20 aquatic filter