Synergy Reef CL-44 Sumps

Rated 5.00 out of 5 based on 4 customer ratings
(4 customer reviews)


Built to order item ships in 2-3 weeks after order is placed

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


  • Probe Holder:
    • 0 $
  • 4" x 12" Filter Socks 100 Micron
    • 0 $
  • 3/4" Return Bulkhead
    • 0 $
  • 1/2" Bulkheads (x3)
    • 0 $
  • Add Refugium Baffle
    • 0 $
  • Heater Holders
    • 0 $
SKU: CL44 Category:


Are you looking for the perfect sump that not only looks awesome, but has over the top performance? 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. Check out these specs and dare to compare to our competitors!

Our new CL Series™ products feature a proprietary color laminating process. We fuse two layers of different colored materials together, creating a 2 tone sheet. We then machine these sheets to our needs. The Cross Laminate™ process makes the sheets thicker as well as provide a really nice looking finished look. These cannot be found anywhere else.

Refugium wall is optional and placed 10″ from the sock wall. Please select the refugium baffle from the options when ordering. There is no charge to add the baffle.


  • Dimensions: 44″ long x 18″ wide x 18″ high
  • Skimmer Section: 27.5″ x 17.5″ (without Optional Refugium)
  • Skimmer Section: 17″ x 17.5″ (with Optional Refugium)
  • 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 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 Synergy Reef Overflow™ systems)
  • Filter Socks Holders: Fits 2 – 4″ x 12″
  • 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: $749.99
We now ship these to your door via UPS Ground! Due to Large size of these sumps and the shipping boxes, we are charging just a FLAT RATE of $135.00. Select Flat Rate on checkout.

These sumps are built to order and usually ship in 2-3 weeks. These are shipped in very large boxes.

Additional information

Weight70 lbs
Dimensions48 x 24 x 24 in
Probe Holder:

Yes, No

4" x 12" Filter Socks 100 Micron

Yes Add 4 Filter Socks, Yes Add 2 Filter Socks, No Filter Socks

1/2" Bulkheads (x3)

No, Yes

Add Refugium Baffle

Yes, No

Heater Holders

None, 1 Set, 2 sets

4 reviews for Synergy Reef CL-44 Sumps

  1. Rated 5 out of 5

    nick (verified owner)

    Just got mine set up! red mercury… really nice sump. also ordered the 10 gallon ATO. One more thing…You should throw in a sticker with your sumps and maybe a shirt! Free advertising man!!!!

  2. Rated 5 out of 5

    TStuc70890 (verified owner)

    I purchased the CL-44 in November 2016. Arrived at my home in Cheyenne, Wy in perfect shape. I was extremely impressed with the packing. The sump has a refugium and works perfectly in my setup. If you are thinking about a new sump, give this one serious consideration.

  3. Rated 5 out of 5

    Tuan (verified owner)

    I just completed a tank upgrade to 180G. I purchased the CL44 for this new build and wow, its very very NICE sump. I spent many days researching which sump to get. This one just had all the features that I wanted, and it looks very cool. When I received it, the craftsmanship is very apparent. No comparisons to my other sumps.
    The design is well thought out and plugs well with the Shadow 16″ Overflow (which I also got for this new build).
    I’m looking to get an ATO unit later on, hopefully a custom size one because I want more than 10G 🙂

  4. Rated 5 out of 5

    matt (verified owner)

    I had a tough time finding a high quality sump that maximized the space I had in the stand and providing all the options I wanted, and the CL44 fits perfectly while not loosing inches of space in depth or height. After comparing Synergy’s offerings and checking their work out in person, Specs, build quality and price made the CL44 my choice over the competition (looked at sumps from BT, BS, GR, AA, and RE).

    The sump was built exactly as ordered from the options available, including inverting the flow to go right to left with no cost increase (got to love that!), and Synergy communicated and responded immediately to all my questions. Vanessa was very pleasant and knowledgeable through the entire process including after I received the sump.

    Packaging was 2nd to none, and even though my UPS delivery guy was clearly in a rush, the sump was in pristine shape when I pulled it out of the box. Build materials and quality are above expectations all the way down to the details. No excess glue, almost no bubbles in the seams, perfect fit on all the pieces and high quality acrylic all the way around.

    Overall, I am very happy with my decision to purchase from Synergy and will enjoy my sump for years to come. I highly recommend them to my friends and other MAS club members when we get together.

Add a review

You may also like…