Improve aquarium water quality and clarity with Marineland® Black Diamond® Premium Activated Carbon. Easy-to-use bulk chemical filter media effectively eliminates foul odors, unsightly discoloration, and harmful organic substances to maintain superior water quality for healthy aquarium inhabitants. Heat-activated bituminous coal-based granules are specially sized for optimal performance. Contains less than 2% moisture. Use with a media bag in any aquarium filter. For freshwater and marine aquariums.
Always rinse filter media before use to remove excess dust. Black Diamond crackles and gets warm as it is being rinsed. This is normal, letting you know it is ready to go to work.
Did you know?
Shop all aquarium filter media.
Please click on "More Information" for directions.