I am thinking of converting my CS6-1 to a recirculating skimmer. My plan is to add a couple more uniseals for the pump intake and the feed pump but keep it in-sump. Hopefully this will get me by until I can buy a larger skimmer. There are just too many other things that I could spend money on right now, like that grow-out tank I keep wanting to add, calcium reactor, more frags etc. It would be nice to get hold of one of the new impellers as well.