Bare bottom is preferred. Also I'm sure you can use the 10g, just really depends on what type of fish you are qting... I have a 20g set up. I also run 2 hob
filters. 1 rated for 60 and the other rated for 20. Maybe put a little floss from your dts filter to help with cycle and establishing new qt. Finally I have a decent size l/r that I leave in the qt just for bb purposes. I would never remove it and out it into my dt.