Can I just fill one of my Yong Heng filters with activated charcoal (after rinsing and drying to one of my output water/ Oil seperator filter like this below?
https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTcj6kmio4NdnISVT6edQU1XuBtVC2jeAWOaIIXo1WPCki-24OJ
https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTcj6kmio4NdnISVT6edQU1XuBtVC2jeAWOaIIXo1WPCki-24OJ