I have a 500 gallon system with 180 gallon sump that has been up and running for about 15 years. Currently I am using a MRC dual beckett skimmer that is fed by a pair of Mag 18 pumps. Yeah it draws a lot of power but it has served me well for over a decade. Today one of my Mag 18 pumps finally bit the dust. Now I am looking for recommendations from others with large systems. From what I have read, the newer style skimmers out there really struggle to handle large tanks unless you spend a small fortune on one. My options are to replace my Mag 18, replace the Mag 18 with a similar pump that hopefully would get my power bill down, swap out to 1 really big pump to replace the 2 mag 18s, or scrap the whole thing and upgrade to a newer style skimmer. Looking on any suggestions before I make my decision. Thanks.