Contaminated aquarium water can severely affect the health and life expectancy of your fish. Metals, chemicals, dyes etc can all affect water purity and clarity and should be quickly eliminated. The use of activated carbon in the water filter is an effective way to remove these contaminants. At Discount Aquatics, we present our Loose Activated Carbon Pellets 500 gram - the ultimate solution for keeping your aquarium pristine. Ensure a longer, healthier life for your aquatic friends with this essential filtration product, expertly curated for discerning aquarists.