N-Clear M Fleece Roller Filter (Main Unit)

Upgrade Your Filter Socks to Automatic Fleece Filtration

• Fits Most Standard 4-Inch Filter Sock Holders and Select AIO Aquariums
• Ideal for Aquariums from 30-60 Gallons, or up to 180 Gallons with Optional Extension Units
• Run up to Three Filters from One Controller with Optional Extension Units
• Filters up to 800 GPH with Automatic Sensor-Controlled Fleece Advancement

Spend less time washing filter socks with the Nature Dimensions N-Clear M. This compact automatic fleece roller traps suspended waste and advances fresh fleece as the used material becomes clogged, helping keep your water clear with less hands-on maintenance. The Main Unit includes the controller, optical sensor, power adapter, and one fleece roll to get started.

N-Clear M drops directly into most standard 4-inch filter sock holders and fits select AIO aquariums with the appropriate mounting adapter. Compatible systems include popular models from Innovative Marine, UNS, Red Sea, and others. Before buying, review the compatibility chart below to select the correct adapter for your tank. N-Clear M Fleece Roller Filter Adapters are sold separately.

Compatibility Chart

Frequently Asked Questions

How long does a roll of fleece last?

Nature Dimensions estimates 3-6 weeks per roll. Actual lifespan depends on your tank size, bioload, flow rate, and sensor height.

How does an automatic fleece roller filter work?

Water passes through a high-density fleece sheet that traps suspended particles. As the fleece becomes clogged, the water level inside rises and triggers the filter to advance fresh fleece. The used fleece collects on the take-up roll, removing trapped waste from the water flow.

Why would someone choose a fleece roller over filter socks or pads?

A fleece roller automatically moves dirty filter material out of the water flow, reducing the time trapped waste has to break down. It also cuts down on the frequent cleaning and replacement required with filter socks or pads.

Can multiple units run at the same time?

Yes. One N-Clear M Main Unit controller can operate up to three filters in Sync mode using one Main Unit and up to two Extension Units. All connected filters advance together when the main sensor triggers. Each Extension Unit includes a connection cable but requires a Main Unit controller to operate.

Specifications

• Configurations:
  • Main: 30-60 gal (114-227 L); up to 800 GPH (3,028 L/h)
  • Main + Extension: 60-120 gal (227-454 L); up to 1,600 GPH (6,057 L/h)
  • Main + 2 Extensions: 120-180 gal (454-681 L); up to 2,400 GPH (9,085 L/h)
• Choosing a Configuration: Choose the number of filters using actual flow, bioload, and the number of active sock openings. All linked motors advance together from the Main unit’s controller and sensor.
• Unused Sock Openings: Cover with an N-Fit 4-inch Sock Opening Cover (sold separately).
• Filter Footprint: 3.55" x 2.9" (90 x 73 mm)
• Height, Excluding Fleece: 15.75" (40 cm)
• Installed Clearance: Approximately 10.6" (27 cm) above the sock plate to the upper roller section, plus room for installation and roll changes
• Chamber Clearance: 4.3" x 4.3" x 7" (109 x 109 x 180 mm) for the supported nonstandard chamber path
• Fleece Roll: 2.4" (61 mm) wide x 82 ft (25 m) long
• Typical Roll Life: 3-6 weeks, depending on bioload, flow, tank size, and sensor height
• Cables: Sensor, motor, and power adapter cables are approximately 60" (150 cm) each
• Power: 100-240 V AC input; 12 V DC, 2 A output. US plug included.
• Fleece Material: Food-grade material, independently tested to meet U.S. FDA food-contact standards (21 CFR 177.1630)
• Control Modes: Sensor-based operation; experimental Timer Mode. See the manual for setup and limitations.

What's Included?

• N-Clear M Fleece Roller Filter (Main Unit)
  • Motorized Filter Roller
  • Controller
  • Optical Sensor
  • US Power Plug Adapter
  • One Fleece Roll