The activated carbon replacement filters are made of coconut shells. The coconut shells are put through a process called carbonization, which removes all other elements other than carbon. The carbon is then "activated" by adding back oxygen, creating a material suitable for adsorption. Activated carbon absorbs basic water contaminants, as well as chlorine from tap water. This helps improve the taste and remove odors from basic drinking water. Rinse filter with water thoroughly before use and replace it every 2-4 weeks to maintain water freshness.

Replacement water fountain filters compatible with Ownpets PET0043 flower fountains The activated carbon absorbs basic water contaminants, as well as chlorine from tap water. This helps improve the taste and remove odors from basic drinking water. Dual-Action filters: Ion Exchange Resin + Premium Active Carbon Catches hair and debris, remove impurities and odor, keep the water tasting fresh. Rinse filter with water thoroughly before use and replace it every 2-4 weeks to maintain water freshness.