Advertisement I'm going to be picking up a gravid heterometrus longimanus in the near future and cannot decide which enclosure I should go for. This will be my first scorpion and project like this. I want to do a live, planted vivarium that will be eye catching as a display, but also suitable for a group. I plan on rehoming most of the scorplings, but I do want to keep 2, maybe 3 depending on what everyone has to say on enclosure size. Option 1: The exo terra habbisphere. It measures 18x12x12 and has built in led lights and I love the bowed glass front. Option 2: Regular exo terra 18x18x18. I enjoy the front access on this over the top and back access of the habbisphere, but it's not as pleasing to look at. Option 3: Your suggestion if neither of these are suitable for my project. I don't want to use any heat bulbs, but I do plan on having a side mounted heat mat. I keep my house at 73°F year round, though it does dip down to 70 if the husband gets ahold of the thermostat, so I'd like to be safe with the heat mat just in case. With the habbisphere, it does have led lights, but I don't think it gives off any heat. If anyone has anything similar for their scorpions, feel free to share!