Biological Filter Foam for the BioStyle Set of 4

• The Biological Filter Foam Set of 4 for the BioStyle 20, 30, & 50 and BioStyle Thermo 30 & 50
• 2-in-1 Filtration – The BioStyle 30 ppi filter foam provides 2-in-1 filtration by catching debris and waste while promoting growth of beneficial bacteria
• Coarse Filter Foam – Provides mechanical and biological filtration results in cleaner, healthier water for your aquarium inhabitants
• Contains four replacement foams that fit inside the chamber of the BioStyle filter. Quantity needed depends on the size of the filter.
• Changing the filter foam – Biological filter foams should be replaced after 12-18 months, depending upon aquarium size, number of fish and plants, and declines in filter performance
• Filter foams fit inside the filter frames (not included). Rinse foams with water before use.
  

four replacement foams