For the ultimate in convenience, choose assembled Whisper Bio-Bag cartridges. They are in color-coded packages, making it easier than ever to remember which cartridges to purchase on subsequent trips to your local aquarium store.
Color-coded packages for ease and accuracy in selection
Convenience of being pre-assembled
Filled with Ultra-Activated carbon, removing waste particles, odors, and discoloration
Please read all label information on delivery
