OK so I have almost completed my stand and most of my new equipment has arrived so the last big project will be the plumbing. I have been planning on building a DIY overflow from the tank to a sump below to house skimmer,UV,heater,etc. Then have the same type of overflow go down another level to the fuge and then get returned back up to the main tank via mag 9.5 The bottom fuge tank will have enough room to hold the overflow when the pump is shut down. Does anyone see any problems with this before I start to cut the PVC? My main concern is that both overflows drain at the same rate. They will both be 1'' pvc but tubes on the tank overflow will be different lengths than sump 1 overflow. All criticism welcomed, thanks in advanced.