Marina Bio-Clear Zeolite Slim Filter Goldfish Cartridge, Pack of 3,Silver

• Ideal for goldfish
• Contains zeolite and ceramitek
• The zeolite effectively absorbs toxic ammonia and reduces stress on the fish
• The ceramitek optimizes biological filtration
• Should be replaced every 2 weeks for the best results, never replace all filter cartridges at the same time to ensure a constant presence of beneficial bacteria

Product Description Marina Slim Filter Bio-Clear is a genuine replacement cartridge for all three Marina Slim Filter Models (S10, S15, S20). Directions Replace the cartridge every 2 weeks and maintain at least one original filter cartridge to ensure the presence of beneficial bacteria. Box Contains 3 x filter cartridges