Whisper 40i Internal Filter c4 foam pad Whisper IQ technology gives you

Whisper IQ technology gives you a filter that is does the job while staying quiet

Lowers pH and absorbs harmful chemicals and heavy metals

Super quiet operation •

Hel-X Biomedia – An extremely large protected settlement surface (800m²/1000 liter) that allows beneficial bacteria to grow and thrive

This economical but sturdy pump adds air bubbles

Whisper 40i Internal Filter c4 foam pad Whisper IQ technology gives youThe Tetra Whisper internal aquarium filter is the ultimate in quiet, convenient 3 stage filtration. The dual sided mesh of the Bio Bag catches debris and fish waste while the activated carbon absorbs odors and discoloration. Biological filtration is provided by the Bio Scrubber. Bio Scrubber's anti clog design provides complete biological filtration with the convenience of less maintenance. Because the Bio Scrubber has a solid back, water is forced to