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

This tubing is not self-weighted

You cannot harm your pond or biofilter by overdosing

5 TT4000 4490gph 21

3/8" x 300' AE40123 - EnhanceAir™ PRO MINI Check Valve AE40136 - EnhanceAir™ PRO 1 & 2 Check Valve

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