http://www.bulkreefsupply.com/ In today's episode we are going to add a sump to our aquarium, upgrade skimmers and auto top off system. We will also change the way we run GFO and carbon. In the beginning of the video we discuss some of the different ways to plumb an aquarium as well as individual plumbing pieces like check valves, gate valves and bulkheads. In a future episode we add a DIY sump.