It should be veasible to build a ATS that pumps above the tank and flows right but in to the display, espesially on a Nano 29g. My canopy is 6" tall, so I am thinking of placing an internal pump in my display and having that feed some PVC to a 3x4" screen. Won't be seen for the most part. Ive done the google but have seen any true ATS builds above the tank. If anyone has any input or a design it would be appreciated.
I've been running one on my tank this way for several years, you can go back in my videos on my YouTube channel and see many iterations
Contemplating life. Now I'm back and ready for a full scrubbing experience, although on a smaller scale. I'm planning a tiny scrubbed tank