Whisper 40i Internal Filter c4 foam pad or 600 includes 6 ultra

or 600 includes 6 ultra fine replacement filter foams

Features 6 outlet plastic valve

Super quiet operation •

Medium Fish Guard - 1500 gph

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

Whisper 40i Internal Filter c4 foam pad or 600 includes 6 ultraThe 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