The UR 80 Media Reactor is designed for SWC Xtreme NP Reduction Bio Media. By simplying changing out the plates/sponges provided it can be used for carbon, GFO, or NP Bio Media. Featuring the latest conical bottom base design for complete fluidization. Use no plates or sponges for SWC Bio Media. Quick change thumbscrews allow for easy assembly and disassembly. One lock screw for upper plate height adjustment. The UR 80 is one of the most universal media reactors on the market.