Diamond Blend® Diamond Blend Premium Activated Carbon and Ammonia-Neutralizing Crystals are ideal for new aquariums. This special formulation of new faster-acting Black Diamond and super-effective White Diamond cleans and condit...
For fast cleanups and removal of microscopic particles. Reusable cartridge contains 320 sq inches of surface area. Fits all Magnums.
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 speci...
Penguin® Filters All Penguin® BIO-Wheel® Power Filters deliver easy, three-stage mechanical, chemical and biological aquarium filtration. Convenient Penguin Rite-Size Filter Cartridges come ready to use with each filter...ready...
Replacement Cartridge for Penguin 170, 200, 330 & 350 Filters