Designed with the hobbyist in mind, the ReefMat features an easy fleece-mat replacement system that allows you to switch rolls without having to remove the filter from the sump or 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 fleece-mat that is used. ReefMat is Wi-Fi connected to Red Sea’s ReefBeat smart aquarium eco-system and will notify you if the fleece-mat gets torn or runs out, gives you a head’s up before it needs replacing, and even provide you with a daily usage log.