So my 8 yr old son wanted to spend some of his hard earned chore money on a little shrimp tank. Well he wanted fish but not happening in that small. We ended up with a little 2.2 gallon cylindrical aquarium. I was curious if anyone has a similar setup I could see? I saw something the other day about “unballing” marimo moss balls and using that as a “carpet” and that had me intrigued. Anyone done that? For filtration I will put a nano sponge filter in my tank for a few weeks to seed it.