Meet the all-new ReefMat - a plug & play, fully automated, smart fleece roller filter that keeps the aquarium water crystal clear for weeks at a time. Designed with the hobbyist in mind, the ReefMat features an easy mat replacement system that allows you to switch rolls without having to remove the filter from the sump, or even turn off the pumps! ReefMat includes a fail-proof solid-state level sensor, and an unprecedented smart drive unit that controls and monitors the exact length of the used