Ensure your Tetra Whisper Aquarium has the quiet, reliable filtration it needs with the Whisper Power Filter. This easy-to-use system introduces your tank to three stages of filtration—mechanical, chemical and biological—to completely eliminate toxic ammonia and nitrites for a crystal clear aquarium. Its water flow was scientifically engineered to create a continuous flushing action, which can help prevent debris buildup and keep your tank cleaner than ever. Key Benefits For a crystal clear aquarium, this filter completely eliminates toxic ammonia and nitrites. Economical and easy to use, even for beginning aquarists. Provides efficient three-stage filtration—mechanical, chemical and biological. The scientifically engineered water flow provides a continuous flushing action to prevent debris buildup. Optimum outflow maximizes water agitation and oxygenation.