ClariSea SK-5000 Gen 3


The ClariSea fleece filter is an extremely compact, patented, high efficiency water filtration system, which continuously removes suspended particles such as micro algae, detritus, food, organic waste and gravel dust from the water column. ClariSea is suitable for use in both marine and freshwater aquariums, fish-breeding and coral propagation systems.



Illustrates the amount of dirt and detrius that is removed on to the fleece during normal use.


A ClariSea filter will completely replace the need for high maintenance filter socks and result in crystal clear aquarium water. 

The use of a ClariSea fleece filter will ensure the highest possible filtration efficiency for optimal light penetration to enhance growth of your corals and plants.

Continuously removes detritus & organic waste from the water column preventing it breaking down into nitrate & phosphate in your aquarium.

The ClariSea fleece filter dramatically reduces the load on your protein skimmer by removing even the smallest of particles.

Constant filtration results in reduced maintenance of pumps, wave makers and protein skimmers, plus... no more socks to clean.

A ClariSea fleece filter will noticeably reduce the accumulation of detritus in your aquarium substrate and sump.


  • Smallest installation footprint – easier to fit into sump
  • High volume filtration capacity – up to 5000 L/hr
  • Completely replaces the need for filter socks
  • Multi-function smart controller:     
    - Automaticaly advances dirty fleece     
    - End of roll audible and visual alarm     
    - Filter jam/float error/overflow alarm
  • Integrated fail-safe overflow – prevents flooding
  • Simple-to-change fleece system, with fleece removal tool
  • Special 40m phosphate free, low-odour fleece material
  • Quick release silencer plates – for quiet operation
  • Easy to clean and maintain design
  • Water bypass system – to open during coral feeding
  • Multiple pipework installation options: 1”, 32mm, 40mm

New additional features of the Gen 3








UNIVERSAL INLET 32mm, 40mm, 1"


Also available as a spare part

The Gen3 ClariSea has a number of new features to speed up installation, make it easier to load the fleece, and maintain the unit without having to remove it from the sump or dismantle. The main body now comes fully constructed and glued together, making initial setup of the unit quicker and easier compared with the previous generations.

To aid with periodical cleaning, the guide rollers and splash guard plates can be removed without the need of tools or having to dismantle the unit. The two splash plates are now quick release, using a drop-in slots to make them simple to lift out, even when the unit is installed in a sump. Specially designed thumb screw stub fixings are used to hold the guide rollers, allowing free rotation as the fleece is wound on. This allows easy changing of the fleece without removing the ClariSea from the sump.

The fleece holder has been redesigned to simply drop on to the top of the unit, taking away the need to release or tighten any fixing screws when the roll needs to be removed or replaced. This is especially handy where space is tight or access to the mounting screw would be limited.

All ClariSea Gen 3 units now include a fleece removal tool to help eject the dirty fleece roll from the spool, allowing the dirty roll to be easily pushed off without the need to cut off or unroll the fleece.

Connection to existing aquarium pipework has also been made more versatile with a specially moulded inlet adapter elbow that will fit 32mm metric or 1” Imperial aquarium plumbing as standard or with the use of a 40mm straight connector will also fit directly to 40mm metric pipework.

Find Stockist Technical Specification

• Recommended flow rate: 5,000 l/h (1,300 USG/h)

• Optimal water depth for longer fleece life: 10cm (4”)

• Minimum submerged water depth: 5cm (2”)

• Maximum submerged water depth: 20cm (8”)

• Hang-on bracket height adjustment: up to 14cm (5.5”)

• Recommended aquarium size: 1200 litres (320 USG)
( Can be used on larger systems with lower turn over rates per hour, max 5000 l/hr ) 

• Universal inlet connection: 32mm / 40mm / 1” (Slip fit socket needed for 40mm connection)

• Filter fleece: 15cm (6”) width

ClariSea Smart Controller

The ClariSea unit includes a smart controller for the automatic and manual advance of the fleece roll. This will also show visual and audable alarms if a potential error is detected during operation.


Play button

Press and hold to manually advance the motor and roll on the fleece.

Alarm button

Press alarm button for 1 - 2 seconds to turn off audible alarm. Alarm condition will still be present with Red LED still flashing. The automatic advance of fleece will be disabled but the play button will still function as manual advance for the fleece.

Pressing the alarm button for 5-7 seconds will fully reset the controller, completely clearing the alarm state and resetting the unit into normal operation mode. Disconnecting power for 30 seconds will also reset the controller and clear the alarm state.



Normal operation

Initialisation (Power on or reset):

  • Blue/Red LED will both flash 5 times, an audible alarm will sound with each flash if the smart controller is reset or powered on.
  • Blue LED will remain on to show that the unit is in normal standby mode.

Motor activation

  • When the motor is activated the blue LED will flash.

Alarm indicators

If the roll cannot advance or the float is activated for more than 5 seconds.

  • Red alarm LED will flash
  • Audible alarm will sound for 2 seconds every 5 seconds
  • Automatic advance of fleece will be disabled until the controller is reset.

If the float is not activated for 8 hours indicating the fleece is possibly empty.

  • Blue/Red LED both flashing, audible alarm will sound for 1 second every 2 seconds
  • Automatic advance of fleece will be disabled until the controller is reset.

If there is a possible installation error and the float is not triggered with 48 hours after initial set-up or reset.

  • Red LED will flash at 10 second intervals the audible alarm will sound with each flash
  • Automatic advance of fleece will be disabled until the controller is reset.


Optional Clean Roll Positioning Kit

An optional clean roll positioning kit is available from D-D product stockists to fit the ClariSea SK3000 Gen3. This will make it possible to change and adjust the clean roll mounting point allowing the unit to be installed closer to the side of a cabinet or where space is restricted. In situations where the ClariSea unit is mounted low in a sump the optional positioning kit is also usefull to move the clean roll into a higher position away from water splashing and for easier acces when changing the roll.


Fast & Simple Roll Changing

The ClariSea gen 3 continuously removes ditritus from your aquarium

ClariSea unboxing and quick setup video

The Obvious Choice

Clarisea Fleece Removal Tool

Reefdudes Review of the ClariSea Gen 3