Depending on the size and bio load of your tank, there is nothing wrong with a Seaclone for doing a soft coral tank. They're not good enough to skim the way you'd need for SPS, but if you want to do clams or soft corals, I used one for years. The Candy Canes I have distributed by the fist-full through the ARC spent 4 years running with a Seaclone 150.
It's not a real good skimmer, but it's adequate as a starter in a soft coral setup on a small tank.