The Marineland Black Diamond Premium Activated Carbon is a high-quality filter media designed for fish tanks and aquariums. Made by the trusted brand Marineland in the United States, this 22 oz (624 g) carbon filter is suitable for all water types. Its premium activated carbon effectively removes impurities and harmful substances from the water, ensuring a clean and safe environment for your aquatic pets. Ideal for maintaining the water quality in your aquarium, this product is a reliable choice for fish enthusiasts.