Tetra Whisper BIO-Bag Filter Cartridges

• UNASSEMBLED REPLACEMENT CARBON FILTER Keeps aquarium water crystal clear – removes odors and discoloration

• CATCHES DEBRIS Dense dual-sided mesh filters debris and fish waste

• FITS TETRA WHISPER WATER FILTERS Color coded to make it simple to remember which replacement cartridge size to purchase

• CONVENIENT Easy to assemble and easy to replace

• USAGE Change monthly or sooner if needed