Versatile. Spacious. Accessible. The IceCap 15 Reef Sump V2 was developed and built around the requirements of a modern-day reef aquarist. Its attention to detail, practical design, and overall aesthetic appeal will exceed any expectations. 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, probe holder, and plenty of room for equipment such as skimmers, heaters, return pumps, and reactors. What changed? The IceCap 15in reef sump has undergone some changes. The small freshwater reservoir has been removed, the return pump section space has increased, and two 1-in drains and a 1-in holder for a possible emergency drain. Additionally, new drains have been added along with a built-in holder for two submersible heaters. It's important to note that the exterior dimensions remain the same size between versions 1 and 2. SS15 Reef Sump Features Durable Acrylic ConstructionBubble Diffusing Intake ChamberDual 1in Intake DrainsBuilt-in 4in Filter Sock Holder with 200 Micron Sock PrefilterTriple Probe Holder and Four Slot Tubing HolderTwin Heater HolderEmergency Drain HolderAdjustable Water Depth (5-9in)For aquariums ranging from 10-80 Gallons Footprint: 15in x 15in x 14in(LxWxH) Intake Drains: Two - 1in Filter Sock Holder: 4inPerfect fit for Klir Di-4 Auto Fleece Filter- Not included. Skimmer Section: 9.4in x 9.6in Return Pump Section: 4.7in x 9.4in Recommended Skimmer(s):