Aqua Ultraviolet® Ultima II Filters with 3" Side-Mount Inlet/Outlet Sinking Uses a six-position control head

Uses a six-position control head

Clearguard 5500 (#05620 / #05625)

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

How does nitrification work

which means that they are electronically controllable

Aqua Ultraviolet® Ultima II Filters with 3" Side-Mount Inlet/Outlet Sinking Uses a six-position control headThe 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