Ice Cap’s Reef Sumps combine solid build quality and practical features at a price point that any hobbyist can appreciate. Providing a simple, open design with ample space for your return pump and skimmer, as well as adjustable baffles with holders and a built-in ATO reservoir, Ice Cap sumps have the features you need with nothing you don’t.



  • Solid acrylic construction
  • Dedicated protein skimmer (and/or reactor) chamber
  • Adjustable baffles with built-in probe holders
  • Dedicated return pump chamber
  • Dedicated freshwater reservoir with lid for ATO
  • Bubble-diffusing intake chamber with lid 


This modern reef sump features a spill-over design in the filter sock compartment with an included lid for quiet operation and reduced micro-bubbles. The top bracing on the sump provides just enough support to ensure a solid build that won’t bow and stress the seams, while keeping the top area wide open to provide easy access during maintenance.



  • Recommended Aquarium Size: 200-300 gallons
  • Dimensions: 36"L x 23.5"W x 16"H
  • Skimmer Section: 16"x 14.7"
  • Return Pump Section: 8.3"L x 8.9"W
  • ATO Volume: 12 gallons
  • Drain Input Fittings: 2
  • Drain Size: 1.5"
  • Filter Socks: 2
  • Filter Sock Size: 7"
IceCap - Reef Sump 36XL