I have a 125 gallon with 225 pounds of live rock and a 40 breeder for the sump. That was too much rock for the DT, just looked like a big wall. I took out as much rock as I could get in the sump. I have a table over the sump that I want to put a Refugium on. I want to use a 10 gallon tank. My question is, I want to t off the sump pump to fill the refugium. The only way I can think of getting the water back to the sump is to drill a hole in the Refugium put in a bulkhead and run a hose back to the sump. Any other ideas would be appreciated. Also how would I partion the Refugium.