UNIVERSAL DESIGN:
Tetra Whisper 20i Internal Filter is an all-in-one air pump and water filter
system.
INTERNAL FILTER:
Mounts on the inside of your aquarium with clip (included).
CATCHES DEBRIS:
Dense, dual-sided mesh filters debris and fish waste.
AERATES WATER:
Air-driven design filters up to 125 GPH while oxygenating water.
CONVENIENT DESIGN:
Uses large easy to change Bio-Bag cartridges; filter mounts inside aquarium,
making it possible to place tank flush against the wall.