Aqua Ultraviolet® Ultima II Filters with 3" Side-Mount Inlet/Outlet Model:30000 They can be used between

They can be used between mats of a pressurized filter or in the bead chamber of a bead filter

preventing the laterals from being clogged

When used according to the instructions

Stimulates and enhances indigenous bacteria while working to digest contaminates and toxins

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Aqua Ultraviolet® Ultima II Filters with 3" Side-Mount Inlet/Outlet Model:30000 They can be used betweenThe 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