I went to my LFS this weekend to get some deionized salt water and crushed coral to fill my tank up. I asked about a good starter sump tank/skimmer combo and the salesperson told me that for a 55 gallon the sump tank.skimmer was overkill. They told me to try a bio-wheel first and along with live rock.. I should be fine. I am posting this in order to get a 2nd opinion and to find out if any here is using a bio-wheel? Any suggestions or info would be greatly appreciated..