First off, I am somewhat of a novice. I have been keeping a small (20 g) tank (successfully) for 3 years now. Until investing in adequate lighting it has been a fish only tank. I am now running MH lighting (250w) and have added some button polyps as a test run. Currently have 1 gramma and 1 oscellaris clown (some inverts). I would like to add more coral to the tank eventually. I am running a Fluval canister filter with no chemical media and Coralife hang on skimmer. Since the Fluval is being used solely for circulation, would I be better off investing in a quality skimmer and using powerheads for circulation? Or would a wet/dry with skimmer be a better option? Any help would be appreciated.