I have a 55 gallon crab for my crew of 4. I started this build in July of 2021 and ended in March of 2022 (a total of 8 months!)
My tank carries out a naturalistic theme which has been carefully and thoughtfully planned out. My pools were hand-built as well- sporting a mesh ladder, extra tupperware underneath to keep molters safe, natural gravel for grip and bubblers. In my tank, you'll see a lot of fake flowers + plants and LOTS of climbing opportuities.
Stretching across my tank, from back corner to front opposite corner is a custom-build. My tank also supports a long shell shop that is consistently stocked full, fake grass background, and different additions such as oyster and lava rock. It was super fun to put together, and my next project is going to be turning my empty 29g into a captive-bred baby tank!