Whisper Bio-Bag Cartridges complete the Whisper Power Filter package for a clean, easy-to-maintain aquarium. The Whisper Bio-Bag multi-packs come unassembled and offer economical pricing on larger quantities.
Fits:
Large- 20, 30,40 and 60 Power Filters and 20i & 40i Internals
Large- 20, 30,40 and 60 Power Filters and 20i & 40i Internals
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