Activated carbon filter insert, designed for 40-70 gallon aquariums, single pack, 4.2 oz. High-quality, research-grade carbon effectively removes odors, discoloration, and contaminants. Enhances water transparency and is suitable for both freshwater and saltwater environments.

• – AquaClear Filter Inserts boost the efficiency of your AquaClear Power Filter
• – Deliver superior chemical filtration with Activated Carbon inserts, available in various sizes for all AquaClear Power Filters
• – AquaClear Activated Carbon Filter Insert