I just inherited a 1 gallon fish bowl because my parents terrarium plants died. I was bored so I converted into a Walstad bowl. I cleaned it out, put some topsoil in the oven to kill anything in it, capped it with a 2 inch layer of pea-gravel, and filled it up. I put some little java ferns, duckweed, and some weird carpet plant I found at Petsmart that was unmarked in it. I'm probably not going to put any fish in it because it's too small. Does anybody have any other suggestions?