Whisper 4i Internal Power Filter trex skull and biological factors

and biological factors

Stylish honeycomb wrap conceals rear filtration compartment

It is only there to show where the boot from the hose attaches

For mounting under and on the side of terrariums

Whisper 4i Internal Power Filter trex skull and biological factorsThe 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