I’m looking for a small sump to fit in a specific cabinet to the side of a 15g nano tank I’m designing. Sump shapes are somewhat limited, but it just occurred to me that I could possibly use a small/inexpensive AIO tank as a sump. If I ran the overflow on my actual display tank to the ”display” portion of the aio sump, I could use that part as a large refugium and then use the “sump” portion of the AIO for media, heaters, and a return to the main display. Can anyone think of why this wouldn’t work well?