Versatile. Spacious. Accessible. The Reef Octopus Octo 30A Reef Sump was developed and built around the requirements of a modern day reef aquarist. This sump will exceed any and all expectations with attention to detail, practical design and overall aesthetic appeal. This modern day reef sump features a spill-over design in the micron bag compartment with compartment lids for quiet operation. The Reef Sump was constructed to adapt to your filtration needs with adjustable baffles with probe holders and plenty of room for the equipment such as skimmers, heaters, return pumps and reactors.