Whisper Medium (Junior) Bio-Bag - Single Pack

Authentic Whisper Filter Bio-Bag disposable cartridges. Each cartridge consists of a plastic frame that is surrounded with a white filter bag that is filled with activated carbon. The plastic frame is specially designed to increase aerobic bacterial action by up to 200%. The fluffy filter bag is designed to remove larger particles from the aquarium water. The ultra-grade carbon is of the highest quality and will help to move odors and organics from your tank water. Fits the Whisper E, J, 10 , 5-10, Viquarium, and Mini models. Each cartridge measures approximately 3-1/4 x 5-1/2".