Great! I forgot to mention, this will probably be a shrimp only tank. I might drop in a single fish or possibly two at some point, but the goal is a shrimp habitat.
I wish there were more inverts to play with, but crawfish are aggressive. I might find some friendly bugs to put in there like dafnia. Still researching.
Self-cloning crays are a peaceful, vegetarian crayfish that only get to around 3". Mine is a really awesome blue color and is great to watch in my community tank. They are kind of expensive initially, but are better-looking then shrimp, IMO.