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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-3415 Sump is engineered for reef and saltwater systems that demand performance, flexibility, and clean organization in a compact footprint. Constructed from durable 3/8″ thick acrylic on the top rim and sides to resist warping, it features a professional modular layout with dedicated chambers for mechanical filtration, protein skimming, and return flow — enabling efficient staged filtration and quiet operation.

Designed to support popular roller filtration systems - including Clarisea SK-3000 & SK-5000 Gen 3, Smarter Reefs AIO units, and the Red Sea ReefMat 500 (18″ models required for ReefMat 1200 compatibility) - the ECCO-3415 is built for long-term adaptability. Advanced features include an optional filter sock plate for mechanical filtration choice, adjustable water height, a silent submerged inlet, removable bubble trap, swappable and expandable bulkhead plates, dual heater holders, and integrated probe and dosing ports, making upgrades and customization simple.

Finished in a sleek black or white acrylic body with colored accents, the ECCO-3415 delivers serious filtration capability in a refined, minimalist design - start smart, finish strong, and give your reef everything it needs to thrive.

Roller filtration systems sold separately.

FEATURES:

Sleek minimalist design with colored accents
Heavy-duty construction with 3/8″ thick top rim and sides for added strength and warp resistance
Dual heater holders included for clean, secure heater placement
Optional flush drop-in polycarbonate lid for a clean, finished look
Expandable inlet bulkhead array allows both the inlet and return chambers to support 1″ or 1.5″ bulkheads
Sump includes four 1″ bulkheads (1.5″ bulkheads sold separately)
Submerged inlet design for silent, efficient operation
Original removable bubble trap system allows operation with or without the bubble trap for increased return chamber space
Includes a standard adjustable wall plate for trap-free operation
Bubble trap assembly features a removable media slide tray and locks securely at the desired water level using durable black nylon hardware
Integrated probe holder with rubber grommets to isolate electrical noise and ensure accurate readings
Four 5/8″ ports for optional 1/4″ push-connect dosing lines
Cord ports with covers keep wiring clean, organized, and out of sight

QUICK SPECS:

Overall dimensions: 34″ L × 15″ W × 15″ H
Roller chamber: 10″ × 14.25″
Skimmer chamber: 13″ × 14.25″
Return chamber: 10″ × 14.25″
Total system volume: 29.74 gallons
Adjustable water level: 6″–10″
Inlet & return bulkheads: (2) 1″ or 1.5″
Heater holders: Dual (included)
Probe holder: Yes
Dosing ports: (4) × 5/8″
Cord ports: Yes