yeah once you set up a separate tank for a frag tank it turns into just that... A separate tank, without fish feeding untill you descide its a good place to QT some fish..... and poof, you have a second tank. And you gotto treat it like a nano, with param and temp swings. Usually its not worth it unless you can plumb it into your main system for the amount of work it takes to maintain it. A weekend away might nuke the tank :tub:
your gonna need a skimmer since the seaclone just makes alot of noise, but you can prolly dump it if your doing religeous weekly water changes, and the koralia might be a bit overpowered for a 10g frag tank, but you'll never have to worry about flow or dietrius settling on the bottom =0) And the PC's will limit you to LPS/softie frags.