SK-72 Clarisea SK5000 & Filter Sock Sump


SK-72 – 72″ x 18″ x 18″ Fleece Roller Mat Reef Sump accommodates up to 2- SK5000 or 2 x Filter Socks – 4″ or 7″ (sold separately). Lead Time will be approximately 4-6 weeks.

    Reset options

    Choose your exterior side colors

    *For Storm Cloud color, please select "All Clear" 

    Use when 1 or no Clarisea is in use. 

    Choose how many Drains you need.

    John Guest Fittings

    • 10 Gallon ATO Containers (44-60-72 Series)

      $239.99 $161.99$206.99

      18" x 8" x  18"  10 Gallon ATO for our TS-44 and CL-44 Series Sumps.

      BUILT TO ORDER ITEM - Current lead time is 1-3 weeks

        SKU: 10GallonATO18

      • 16" Shadow Overflow V3


        MSRP: $249.99

        In Stock and ready to Ship! Shadow V3 Overflow Kit

        • Don't Forget to add these and SAVE Now!

          *63mm Diamond Hole Saw

          Used for drilling holes for the Overflow on Glass Aquariums (not for Acrylic). 

          *Additional Removable Weir

          *Internal Pipe Kit

          Internal Pre Cut Pipe Kits. Easy to install!

          *External Pipe Kit

          External Pre Cut Pipe Kits. Easy to install!

          Pump Return Parts and Tools. 

          *35mm Diamond Hole Saw

          Used for drilling holes for 3/4″ Return bulkhead hole on Glass Aquariums (not for Acrylic). 

          *Overflow Loc-Line® Return Kits

          Single Overflow Loc-Line® Return Kit

          Double Overflow Loc-Line® Return Kit

          *Plastic Trim Spacer Kit

          - Used for plastic trimmed tanks if you want to have a higher water level above the trim. Only needed on a small amount of tanks. 

        In stock (can be backordered)

        SKU: Shadow16V3
    SKU: SK-72 Category:


    Are you looking for the perfect sump that incorporates the Best Fleece Roller mat available, the Clarisea SK5000? The Synergy Reef® SK-72 model sumps are your answer. We have designed this sump to be able to run 1 or 2 Clarisea SK5000 Gen2, Gen 2.1 or Gen3 rollermats (Gen3 as of Feb 1, 2022). Earlier Gen 2 models will require a different float switch bracket. Please let us know on checkout if you need Gen2 Brackets. These flow rates vary and we recommend running a lower flow rate for more efficient filtration. Very easy to drop in your Clarisea SK5000 and get running. No Modifications needed and will not void your Clarisea warranty. You can also run filter socks on this sump in tandem with the SK5000. Or if you want to just run 7″ or 4″ filter socks, that can be done as well. This is a universal sump that will allow multiple configurations and not be obsolete like other roller mat sumps that are built into the sump. These are hand-built right here in the USA with only the highest quality materials and craftsmanship. Our 72″ models are designed to provide the best functionality on your system. You will need to purchase the SK5000 fleece filter separately.

    Since this sump has a Refugium built in, you get the added benefit of the Refugium removing nitrates for you. So 2 mechanical filtration sections (Socks & Skimmer) and a Refugium.  We recommend this sump for tanks up to 350 gallons..  With 2 SK5000s there is a maximum flow rate of 2600 gph thru the sump.

    These are available in left to right flow or right to left flow. Please select the option.



    ***Clarisea SK5000 NOT INCLUDED*****


    • Standard – Clear Sides and Back ***** If you would like the sides and back the to be matching Color , please select “Color To Match” in the Exterior Wall Color Option above. For Storm Cloud choose “ALL CLEAR”.  Storm Cloud will have White sides/back with a Clear Smoke front. 
    • Dimensions: 72″ long x 18″ wide x 18″ high ( 23-25″ with Clarisea Installed)
    • Refugium Section: 19″ x 17.5″ (Approximately 15.5 Gallons)
    • Skimmer Section: 25.75″ x 17.5″
    • Return Pump Section: 9″ x 17.5″
    • Total Water Volume: 94.5 Gallons
    • Skimmer Water Level: 6″ to 10″ adjustable
    • All Stainless Steel Screws are included. No plastic threaded screws.
    • 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 Return Pump area. (Optional lids can be purchased for the Filter Sock area, can only be used over filter socks)
    • High Quality machine rounded and chamfered edges
    • Advanced designed Euro-bracing also has cord routing and Dosing connections built in
    • Drain Input Fittings: 3 x 1.5″ ABS Bulkheads (Allows Plug n Play with the Shadow Overflow® systems) (Optional up to 5 1.5″ Drains)
    • Interchangeable Filter Socks Holders: Fits 2 – 7″ socks or 2 x 4″ socks (Choose your option below)
    • 2 holes in center euro-brace to accommodate optional 1/2″ Bulkheads for easy hookup to manifold returns or reactors.
    • Return Area has a 1″ bulkhead and optional Bulkheads for easy return pump hookups.
    • Optional 4, 5 or 6 x 1/4″ John Guest tubing holders for plug n play dosing / ATO connection
    • Optional 10 Gallon Matching ATO can be found Here: 10 Gallon CL ATO™ This Item can be bought along with the Sump for an additional savings! See below:


    MSRP: $1724.99 -$1774.99
    We ship these via LTL Freight due to Large size of these sumps. Freight cost is shipped to your home or business. You can calculate freight costs on checkout.


    Additional information

    Weight125 lbs
    Dimensions75 × 22 × 26 in

    , , , , , , , , , ,

    Exterior Wall Color


    4 Port Probe Holder


    Heater Holders

    , ,

    Sock Silencer (set)

    No, Yes, I do want matching sock silencers

    Add 2 x 1.5" Drains


    Return Bulkhead Size

    , , ,

    Stainless Thumbscrews

    No, Plastic is fine., Yes, Adjustable Baffle and Passive Baffle (Qty.4)

    Add ATO


    Customer Reviews

    Based on 1 review
    C Taylor
    SK-72 Clarisea SK5000 & Filter Sock Sump

    Rick & Vanessa were great to work with in ordering our sump. I was kept up to date with progress of the design/creation of the entire thing. It surpassed my expectations, and I couldn't be happier with the design. I love having the option of using either Clarisea roller or filter socks with easily interchangeable hardware to swap between the 2 filtration methods. Everything is perfectly built to what I need and I can't think of a single thing to say as a "con". Thank you so much for your great work and great customer service. I will definitely recommend this business to anyone looking for a custom sump.

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