I took my 40 gallon breeder and wanted to extend the height to allow for more climbing. So I built a screened in enclosure to "top" the tank. See pictures below. The pictures don't do it justice. It looks awesome. Considering the dimensions, it should make my 40 gallon equivalent to a 70 gallon approximately. I only have 9 crabs regardless, and only 1 is a Ruggie. The rest are all PPs who I keep reading are "tree crabs" more than the others. So I now have all of the choya wood, each piece approximately 2 feet in length...three at each end creating a tripod, the single choya laying across like a platform, and then another piece leaning against the platform in the middle. I also have the large fake wood piece in the middle that I got on clearance at Petsmart a few months ago. That is what started this all! It was so cheap I couldn't pass it up, but it was too tall for the tank. So I made the tank taller, haha. The plants are all regular ol silk type plants from Michaels...including the fake bamboo at the tripods. I added other silk type plants to the fake wood piece in the middle to spruce it up. It is hard to get an idea of the size...the tank is 3 feet long and now nearly 3 feet tall as well...probably right around 2 and a half feet or a little taller. I went back and forth on what to use on the topper. I have had the frame built for over a month and have been deciding whether to use screen or plexiglass. The screen was easier and will allow for some fresh air. I know humidity is a problem with screens. I have added a tropic-aire and will also add a mister that can mist at intervals during the day. The tank is somewhat experimental in that respect as I have to be able to keep the humidity up to make it work. It is low so far but not horrible. I've only had it put together for a day, so a little tweaking will be in order. I also still need to paint the frame of the tank (black instead of the fake wood) and paint the actual stand which is still 'raw'. It'll be black as well so everything matches. I am going to try taking better pictures tomorrow during the day and with better (natural) light. The full picture shows a 10 gallon underneath the stand, full of water and growing my mangroves (and some fish and decorations for good measure). There is an additional 10 gallon upside down on top of that tank to increase the humidity (and keep the cats out). So that somewhat gives an idea of size. The setup of the 40B looks awesome in person. Lots of room to climb and choya to EAT. PPs are underrated ;-) I love them and the way they climb anything and everything.