hey nice build. im currently adding a 20 gal nano peninsula to my collection of reefs. if im not mistaken you can turn the ai prime mount around and have the smaller part of the bulky block in the chamber where the fat part of the bulky black block is located now? lmk how that works. ive decided to go with the kessil a160 for my nano. i think guest will love the shimmer of the kessil also