Synergy Reef CL-44.7 (7″ Sock Version) Sump


44″ x 18″ x  18″ Reef Sump with 7″ Filter Socks


  • Return Bulkhead #1*
    • 0 $
  • Return Bulkhead #2*
    • 0 $
  • Exterior Wall Color*
    • 0 $
  • Add Refugium*
    • 0 $
  • 4 Port Probe Holder*
    • 0 $
  • Heater Holders*
    • 0 $
  • 1/2" Bulkheads (x3)*
    • 0 $
  • Stainless Thumbscrews
    • 0 $


SKU: CL44-4-1 Category:


Are you looking for the perfect sump that not only looks awesome, but has over the top performance and will last for years? The Synergy Reef® CL-44 model sumps are your answer. We have designed this model to meet the demands of the reefer who demands more than the average off the shelf sump for large systems. These sumps are ready out of the box to meet those needs! These are hand-built right here in the USA with only the highest quality materials and craftsmanship. Make sure you check other sump manufactures’ 44″ sump dimensions as they are not the same as ours. Our 44″ models are designed to provide the best functionality on your system, not designed for easy shipping for mass market. The larger width and height set us apart.

Refugium wall is optional and placed 10″ from the sock wall. Please select the refugium option from the options when ordering. Refugium does have a separate Poly carbonate lid over it with passive baffle system.


  • Standard – All Clear Sides. ***** If you would like the sides and back the to be a solid color, please select “COLOR TO MATCH” in the Exterior Wall Color Option above.
  • Dimensions: 44″ long x 18″ wide x 18″ high
  • Skimmer Section: 21″ x 17.5″
  • Skimmer Section with added refugium: 10.75″ x 17.5″
  • Return Pump Section: 6″ x 17.5″
  • Total Water Volume: 58 gallons
  • Skimmer Water Level: 6″ to 10″ adjustable
  • Removable Laser cut media tray in between the baffles use for filter pads and bags of media
  • Laser etched water level markings to allow easy setup of skimmer water depth from 6″ to 9.5″
  • High Quality Precision Machined Poly carbonate lids over Filter Socks, Optional Refugium and Return Pump areas
  • High Quality machine rounded and chamfered edges
  • Advanced designed Euro-bracing also has cord routing and Dosing connections built in
  • 4 x 1/4″ John Guest tubing holders for plug n play dosing / ato connection
  • Drain Input Fittings: 3 x 1.5″ ABS Bulkheads (Allows Plug n Play with the Shadow Overflow® systems)
  • Filter Socks Holders: Fits 2 – 7″ x 15″
  • 3 holes in center eurobrace to accommodate optional 1/2″ Bulkheads for easy hookup to manifold returns or reactors.
  • Return Area has a 1″ bulkhead and optional 3/4″ Bulkhead for easy return pump hookups.
  • Optional 10 Gallon Matching ATO can be found Here: 10 Gallon CL ATO

MSRP: $794.99

We ship these via LTL Freight on a pallet due to Large size of these sumps. Ground shipping available for an additional handling/packaging charge.

*****These sumps are built to order and may take 3-4 Weeks for shipment.***** During High Volume Months (October – June) Build times may be longer. Please contact us if you have any questions.

CL-44 Storm Cloud

Additional information

Weight105 lbs
Dimensions48 × 30 × 30 in


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