NanoMat is a plug & play, fully automated, smart fleece roller filter that keeps your aquarium water crystal clear for weeks at a time. NanoMat is designed as a drop-in replacement for Red Sea 8 standard 4" filter socks and for the rear sump of the Max Nano G2 all-in-one systems. The NanoMat features a smart processor-controlled drive unit with a fail-proof, solid-state, dual level sensor. The main sensor automatically advances the roll whenever the fleece gets blocked while the second sensor suspends the auto advance when a high-water level is detected, such as when return pumps are stopped during feeding or maintenance. Indicator LEDs show when the auto advance has been suspended due to a high-water condition or a jammed mat. Features: Plug 8 Play, drop-in installation. Suitable for: Red Sea 8 standard 4" filter socks and for Max Nano G2 systems. Easy fleece-mat replacement system. 59' efficient, high-flow, skimmer friendly, non-woven polyester fleece-mat rolls. Autonomous Drive-unit (No App or Internet). Solid-State, Auto-advance and High-water level sensors (no moving parts). Auto Shutdown to prevent fleece wastage. Note: Suitable for seawater aquariums only. Reefmat 250 Nanomat Specs: Max Flow Capacity - 250gph Recommended For - Up to 53gal Fleece mat width - 2.2" Fleece mat length - 59' Dimensions - 3.5 x 3.5 x 16.1"