Aqua Ultraviolet® Ultima II Filters with 3" Side-Mount Inlet/Outlet Sinking Internal re-circulation prevents overheating and

Internal re-circulation prevents overheating and ejects obstructing debris

(LPM) BHB-MD-225 ABS / PP EPDM 9" 25-80 BHB-MD-310 ABS / PP EPDM 12" 25-160

sodium selenite

All stained options utilize Natural-Kote™ eco-friendly soy-based stain

a serrated aluminum head for efficient pick-up and disposal of algae

Aqua Ultraviolet® Ultima II Filters with 3" Side-Mount Inlet/Outlet Sinking Internal re-circulation prevents overheating andThe Ultima II Filter is the best choice for home hobbyists and aqua professionals alike due to its impressive capacity and minimal, effortless maintenance. Independent laboratory testing confirms that the Ultima II filter is superior to three leading bead filter brands in setup, nitrification, back washing and overall efficiency. It's perfectly designed for high flow rates, extreme fish loads and elevated feed rates. Why Use a Biomechanical Filter? To