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Feature

Whisper Bio-Bag Cartridges complete the Whisper 3i In-Tank Filter for a clean, easy-to-maintain aquarium
Filled with Ultra-Activated carbon, ready to use disposable single packs remove waste particles, odors and discoloration, and are easily changed once a month
Small Size, 2-pk assembled

Description

Whisper Bio-Bag Cartridges complete the Whisper 3i In-Tank Filter for a clean, easy-to-maintain aquarium. Filled with Ultra-Activated carbon, ready to use disposable single packs remove waste particles, odors and discoloration, and are easily changed once a month. Small Size, 2-pk assembled