I think the Finnex fuge is the best add-on for the money on this Nuvo16 (or for any 4 to 16 gal nano). Please keep us posted with pics if possible on how you utilize the HOB fuge. I am ready to purchase 3 of these and would love to learn from your progress (or lack ther of)...good luck
PS - I agree that the NUVOs and Innovative Marine are the only choice for AIO NANOs! I had an issue and called, I thought they were going to come to my house at one point...almost had to clean the place. Luckily we resolved due to their exhaustive efforts to make me happy. Love those guys!