Tetra’s Whisper® and Tetratec® Filter Cartridges provide both mechanical and chemical cleaning of your aquarium’s water.

	Whisper® Ready-to-Assemble Bio-Bag® Cartridges Are easy to replace, and remove waste particles, odors and discoloration.		Whisper® Filter Cartridges Are easy to replace, and remove waste particles, odors and discoloration.
	Whisper® Assembled Bio-Bag® Cartridges The same protection as traditional Bio-Bag® in a convenient, assembled form.		Whisper® Assembled Filter Cartridges The same protection as traditional Whisper® Filter Cartridges in a convenient, assembled form.