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Tetra Whisper® Bio-Bag® Replacement Cartridges (Medium, 3 ct)
For the ultimate in convenience, choose Assembled Whisper® Bio-Bag® Cartridges. Packages are color-coded, making it easier than ever to remember which size to purchase.
Fits:
Small-3i Internal
Medium- PF10 Power Filter, 10i Internal and Reptofilter 90 GPH
Large- 20, 30,40 and 60 Power Filters and 20i & 40i Internals
Instructions
1. Rinse Bio-Bag• under cool tap water to remove carbon dust.
2. Open lid and insert Bio-Bag into filter.
3. Replace clogged Bio-Bag when there is reduced water flow out of the filter.
For best results, change Bio-Bag monthly or sooner, if required.