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Save an extra 20% off your entire order with coupon code: HOLIDAY20
*May exclude certain brands.
**May not be combined with any other offer.
Code expires 12/13/13
Biological filtration is the key to a healthy tank! This type of filtration, Duetto Bio Sponge, will remove harmful ammonia and nitrites from your aquarium water. Add biological filtration to your Duetto filter with this biological filter pad. Custom designed for the Duetto Submersible Power Filters.