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Trigger Systems

Cube Sump, 18'' - Trigger Systems

  • Dimensions: 18″ long x 18″ wide x 15″ high
  • Drain/Skimmer Section: 10.875″ x 11″
  • Front/Refugium Section: 17.5″ x 6.5″
  • Return Pump Section: 6.4375″ x 11″
  • Total Water Volume: 20 gallons
  • Skimmer Water Level: 9.5″ fixed

Some of the features of the CRYSTAL sumps are:

  • Locking Filter Sock Holder
  • Dual platforms (SUMP model)
  • Protein Skimmer section
  • Refugium section


The CRYSTAL series sumps have the same design and quality as the RUBY series sumps but are made of all clear material. The differences when compared to the equivalent RUBY sump:

  • Same or slightly smaller dimensions
  • All clear material instead of the RUBY red
  • No probe holder

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