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Save an extra 20% off your entire order with coupon code: MARCH20
*May exclude certain brands.
**May not be combined with any other offer.
Code expires Saturday, March 15th 2014
Marineland Bio-Filter Balls for all C-Series Canister Filters. The Bio-Filter Balls provide a large, multi-faceted surface area for the growth of beneficial ammonia-neutralizing bacteria responsible for biological filtration.