The High-Capacity Carbon Block Filter is designed to process up to 12,000 gallons of water at 2ppm chlorine concentration and up to 24,000 gallons at 1ppm. This filter uses high-purity coconut shell activated carbon that effectively removes 99% of chlorine, taste, and odor from the water. The filter is constructed with food-grade, non-shedding polypropylene fabric which captures impurities for cleaner water output while preventing carbon fines from entering your aquarium system. It includes a silicone O-ring to prevent bypass, ensuring reliable performance under high pressure conditions.