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ECCO LINE SUMPS are in-stock and ready to ship with no lead time.

The ECCO Line Sumps are designed to be the last sump you’ll ever buy - feature-rich, modular, and built to grow with you as your reef system and the hobby evolve. Thoughtful engineering allows the ECCO design to function effectively as either a Berlin-style or Triton-style sump, giving you flexibility in filtration methodology from day one.

The ECCO-3418 Rollermat Sump (Black) is a high-capacity, roller-ready sump engineered for reef and saltwater systems that demand performance, flexibility, and clean organization. Constructed from robust 3/8″ thick acrylic on the top rim and sides to prevent warping, it features a professional modular layout with dedicated chambers for roller filtration, protein skimming, and return flow, enabling efficient staged filtration and quiet operation.

Designed to support major roller filtration systems - including Clarisea SK-3000 & SK-5000 Gen 3, Smarter Reefs AIO units, and Red Sea ReefMat 500 & 1200 - the ECCO-3418 is built for long-term adaptability. Advanced features include an optional filter sock plate for mechanical filtration flexibility, adjustable water height, a silent submerged inlet, a removable bubble trap, swappable and expandable bulkhead plates, dual heater holders, and integrated probe and dosing ports, making upgrades and customization simple.

With its sleek black acrylic finish and serious filtration capability, the ECCO-3418 Rollermat Sump delivers professional performance in a refined footprint - start smart, finish strong, and give your reef everything it needs to thrive.

ROLLERMAT SOLD SEPARATELY

FEATURES:

• Sleek black or white acrylic body with durable 3/8″ thick acrylic walls for strength and warp resistance
• High-capacity, roller-ready sump designed for reef and saltwater systems
• Modular layout with dedicated chambers for roller filtration, protein skimming, and return flow
• Supports major rollermat filtration systems (sold separately)
• Adjustable water height for flexible equipment tuning
• Submerged inlet design for quieter, more efficient operation
• Optional dual 4″ filter sock holders for mechanical filtration flexibility
• Original removable bubble trap allows operation with or without bubble control, increasing usable return chamber space
• Expandable inlet and return bulkheads support 1″ or 1.5″ plumbing configurations
  
• Integrated probe holder with rubber grommets
• Four 5/8″ dosing ports
• Cord ports with covers for clean cable management
  
• Dual heater holders included

QUICK SPECS:

• Dimensions: 34″ L × 18″ W × 15″ H
• Roller chamber: 10″ × 17.5″
• Main / Skimmer chamber: 13″ × 17.5″
• Return chamber: 10″ × 17.5″
• Adjustable water height: 6″–10″
• Inlet bulkheads: (2) 1″ or 1.5″
• Return bulkheads: (2) 1″ or 1.5″
• Optional filter socks: (2) 4″
• Dosing ports: (4)
• Probe holder: Yes
• Cord ports: Yes

• Total volume: 36 gallons