REFINECOAL adsorbent filter media retain harmful substances such as chlorine, residues, drug treatments, dyes, etc. Everything you need for a healthy garden pond that lasts longer than ever: Our accessories help you achieve this. FILTERBIO is the high quality biological filter media that we use in the PRESS and LOOP filter systems. The filter mass works optimally with the REPLAY and REFINE filter mats. You can also find the GLOWUVC replacement lamp for our CLEAR UVC clarifier here in our accessories range.