Available for the 32″ and 40″ diameter Fountain Bowls. Add the Fountain Bowl Filter Mat when turning your Fountain Bowl into a biological filter. 

Full Fountain Bowl Biological Filter Kits available (#80016, 80017)

• For use with 32″ (81 cm) and 40″ (102 cm) Fountain Bowls with four internal shelves
• Provides mechanical and biological filtration
• Medium density, rigid filter mat
• Easy to clean/maintain Complete Biological Filter Kit available (#80018)
• 28″ Dia (71 cm) x 1.5″ (3.8 cm) Thick
• 34.75″ Dia (88 cm) x 1.5″ (3.8 cm) Thick