I just got done assembling my structures. I use a whole 10oz. Bottle of the @Bulk Reef Supply extra thick superglue. I did the superglue and baking soda trick to get them to bond. After it set for a few hours I flipped the structures and reinforced each joint and dusted with baking soda again. These bad boys are rock solid. The cardboard underneath the rockwork is the inside dimensions of the tank and I gave myself two inches clearance all the way around. This tank is going to be a mixed reef lit by an Ap9x so I took the light spread into consideration while building. I may end up adding little bits here and there but this is it for the most part. Any questions or comments are welcome!