After waiting since Christmas to get a reef ready 180g , I learned the store I am dealing with has a regular 180 in stock. So I'm back to installing an external overflow. I'm OK with it as each has it's pros & cons. I had already decided on a Fuji Cube when I was going to use the 125g we bought used. Only thing I'm now debating is whether to go with the 1600gph 16" or the 2000gph 20" . Price difference is negligible. My pump is an Iwaki rated at 1500gph but with head pressure from basement and teeing off for the refugium, I expect more around 1000gph.

