So, I'm beginning to think that money I could put into upgrading the RSM might be better spent on a whole new bigger set-up. I've got limited room at home, so its likely that I won't go much bigger than 4' / 1.2metre (I've actually already got a 1 metre Eheim converted to take an MC600 sitting in the garage, along with the other half of the rockwork that ended up in my RSM). Although I'd love to build a huge tank the reality is that I'm not in a position to right now, so what is the 'usual' set-up around a 3-4' tank? A couple of Halides backed up with a couple of t5's, MC(E)500/600 skimmer? What else should I include in my costing?