Hello again Ned,
I think i will replace my 55 tank with a 55 overflow before i continue with my marine setup. Can you suggest one over the other? I will use the 55 as display, and put the 30 in the basement as a filter/heater/skimmer/refugium and plumb up to 55. The plumbing run will be close to 15 feet. I beleive the AGA is predrilled in the back middle of tank? Thanks