That looks like a good build. Functionality always wins over aesthetics. The aquarium pump I got was not very powerful. You can get high flow pumps which I think could be powerful enough to fill a large chamber like an UDS. I had a nebulizer sitting around so I didn't want to go back and spend $30 for a larger pump. If I had used a smaller vertical smoker, the small aquarium pump would have been fine. The problem with the small pump and UDS is that all the smoke stayed at the bottom of the UDS. There is no heat, so no convection to pull the smoke up out of the UDS smoke stack. The nebulizer just barely running forced the smoke out of the UDS.
I ran the smoker with the aquarium pump for an hour and a half without refilling it. When I hooked up the nebulizer I refilled the shaker with chips and ran it for another hour. With the aquarium pump I could have easily run the smoker for two hours without refilling. Probably could have gotten close to that with the nebulizer.
The lesson I learned was to get a good sized aquarium pump if you are gonna fill up a large smoker.
BTW that was 8 lbs of wheat malt in the smoker