Black Diamond Premium Activated Carbon eliminates discoloration, odors, and impurities...and keeps on doing it long after other carbons quit.
Heat-activated bituminous coal-based Black Diamond granules are specially sized and far more efficient than inferior coconut, wood or peat-based carbons. Premium Black Diamond works as much as twice as fast as the competition.
- For use with all Marineland C-Series Canister Filters
- For best results, replace carbon bags every three weeks
- Contains two replacement bags
- Prompt shipping, good price Review by johnsr59
My aquarium filters were shipped promptly, delivered as scheduled, and at a good price. (Posted on 6/24/13)