I bought a pair of used Sea Sweep awhile back that came with Tunze 6205s. My plan was to use on a 200-250g future build, but that is no longer happening. I'm setting up an SCA 80g "cube". The 6205s are huge, so I was thinking of attaching my 6105s (700-3500gph), but was still concerned about too much flow. I also have a set of nano 6025s (700gph) that I can use. So what powerheads should I use with these?