The filter bag holder in all MAX NANO G2 and REEFER G2 systems is removable, allowing the NanoMat to easily slide into its place.


Upgrading to one of the ReefMat models allows you to benefit from timely notifications and ReefBeat App-controlled innovative features.

FAQ Section
Red Sea NanoMat Replacement Fleece Rolls (2-Pack)
Efficient, high-flow, skimmer-friendly, non-woven polyester fleece-mat roll.
Crystal Clear Water. Zero Effort. Total Automation.
Keep your NanoMat Fleece Roller Filter running at peak performance with this genuine Red Sea replacement 2-pack. These 18-meter rolls of 50 gsm nonwoven polyester are designed to capture even the finest particles, replacing the need for messy, high-maintenance filter socks.
Key Features
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High Efficiency: 50 gsm nonwoven polyester fleece ensures crystal clear water without stripping essential elements.
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Skimmer Friendly: Material is specifically chosen to prevent protein skimmer "over-foaming" after a roll change.
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Easy Mat Replacement: Designed for the NanoMat’s "Plug & Play" architecture—swap rolls in seconds.
Specifications (Per Roll)
| Feature |
Detail |
| Material |
50 gsm nonwoven polyester |
| Fleece Width |
5.5 cm |
| Fleece Length |
18 m |
| Compatibility |
Red Sea NanoMat Roller Filter |
FAQ Section: Common Questions
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How often should I change the roll?
The NanoMat’s solid-state water level sensors advance the fleece only when needed. Depending on your bio-load, one 18m roll can last several weeks on systems up to 200 L.
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Do I need an app to monitor the fleece usage?
No. The NanoMat features a processor-controlled drive unit with an auto-shutdown feature to prevent fleece wastage, operating entirely independently of the internet.
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Will this fit my REEFER G2?
Yes! These rolls are for the NanoMat unit, which is a direct drop-in replacement for the 4” filter socks found in MAX NANO G2 and REEFER G2 systems.
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