DOUYU Purified Water Protein Cotton Filter Media

DOUYU Purified Water Protein Cotton is an aquarium filtration media designed to maintain crystal-clear and healthy water conditions. Engineered to quickly eliminate yellow water, discoloration, and foul odors, it effectively adsorbs organic waste, ammonia nitrogen, and nitrites. By targeting excess dissolved organics, it also helps inhibit unwanted algae growth. The media can be placed directly into a filter tank or canister inside a mesh bag and can be regenerated by soaking in concentrated salt water once saturated, providing reusable filtration for home aquariums.