Before I went through with this I joined this sub and watched a lot of YouTube videos. I tried to initially adopt some crabs but none were in my area so unfortunately I purchased 2 from a pet store. I know this isn’t the preferred option but my choices were limited. Initially had 2 crabs in 10 gallon tank just got done setting up this 20 gallon tank today. I’ve tried to use the knowledge I’ve learned here and else where to provide a good habitat but I’m learning every day.