Cool,I have a 2.5 gallon nano.I should have thought of that surface skimmer idea.it skind of cool,I dont have any fish in it yet,and I have Pods and bristle worms everywhere.I mean,I have more Pods in my 2.5 gallon then I do on my 7+ gallon refugium on my 55g.
I have the same lights as you have there,my only corals though are a colony of star polyps and some xenia from my 55 that wasnt doing well. I have never done any water changes,and only do top off,and I never really plan to put in any fish,becasue everything is doing great now. But im having trouble getting the star polyps to grow any.But cool tank,good luck.