Petoneer Replacement Filters for Fresco Mini Pet Fountain and Fresco Mini Plus Smart Pet Fountain, Futternapf

PP cotton: reduces pet hair, debris, and fine particles KDF: reduce or remove heavy metals in water and inhibit the growth and reproduction of microorganisms Activated carbon: remove residual chlorine and odors from the water Ion-exchange resin: soften water and remove calcium and magnesium ions *For a good filtration performance, it is suggested to replace every 30 days.