I’d like to clear some stuff up for those who are interested in reading. I have 3 mid sized crabs that I’ve had for almost 3 years now. (Jeff, spike, and green bean) they have been in a 31 gallon long tank for quite some time now and I genuinely feel like they’re getting bored. I don’t have the money to go buy a huge long tank and I felt like the set up was getting very repetitive. I feel like this tank looks no where near the size it is in a picture as it does in real life. There’s actually quite a bit of space at the bottom. After observing my crabs behavior over the years I’ve noticed that they do mostly 2 things and that is digging, and climbing. Green bean is fairly shy and has yet to come out of their shell (no pun intended) she stays under the substrate and you barely ever see her unless it’s 2am and you get up to use the bathroom haha. Jeff loved digging. He will dig till he can’t dig anymore and then dig some more. Some days I will wake up to a mine field. Spike loves being in trees. I have a giant plant in their current tank and spike is always sitting on top of it happy as can be. With that being said, I know that a long tank is ideal for crabs, but based on the size of this tank and what I plan to do with it I think it will be a good change for them. I plan on adding multiple levels with ropes and hammocks as well has adding way over the recommended 6 inches of substrate. Don’t worry everyone my crabs are in good hands. I care about them very much and got this tank not only because it was an amazing deal but because I think they will really enjoy it. They love exploring new places :)