Wow, haven't been here in ages.
Anyways, received a small windfall a while back and was encouraged to do something self-indulgent with some of it. Picked up some custom tempered glass sheets and voila!
Very proud of this and happy for the crabs too, since it gives them room for lots of climbing, which I had lost over the years as I added substrate to keep it deep enough for the mighty Roscoe to have enough depth to molt.
The topper is essentially an upside-down frameless aquarium with a sliding door in the front. The opening was designed to perfectly match the half-opening of the main tank, with a flat bead of silicone around the lip to ensure the force is evenly distributed.
