The Aqua MegaDisk cloth media filter from Aqua-Aerobic Systems has 30 percent larger diameter disks than the original AquaDisk filter and treats up to 24 mgd in a single unit. Each disk is 10 feet in diameter with eight lightweight, removable segments for ease of maintenance. It uses up to 24 disks in a single filter and uses OptiFiber cloth media. It has a fully automatic PLC control system and a low hydraulic profile. Because fewer filters are required, the footprint is small. It has low energy consumption. 815/654-2501; www.aquamegadisk.com.