All Penguin® BIO-Wheel® Power Filters deliver easy, three-stage mechanical, chemical and...
Each Preassembled Rite-Size and Emperor Cartridge Has A Patented Ribbed Back That Evenly...
Tetra’s Whisper® Filter Cartridges provide both mechanical and chemical cleaning of your...
Improved performance and easy maintenance.
For the ultimate in convenience, choose this 3-Pack of Assembled Whisper® Bio-Bag® Cartridges....
For the ultimate in convenience and quiet, choose a Whisper® In-Tank Filter.