If you have 12 lbs of live rock & sand, I don't see any need for additional filtration. The Skilter is a very inefficient skimmer. You only have about 1 inch of contact time between the bubbles and water. It does not surface skim. It has a very skinny neck, restricting output. However, for a 10 gallon, it would do the trick, but i just dont' see the need.
Also, the Skilter is a very loud unit. The worst i've ever had.
"Looking in windows, knocking on doors, they need to take seven and they might take yours."