This is one of my 2g tanks-it has guppy grass or called naja grass, hygrophlia corymbosa (looks like a sword in this pic), java moss in the back, rotala indica and water lettuce, unfiltered and with a heater, potting soil substrate and black sand cap, the little pebble you see are to hold down the plants when I first set it up. It has red cherry shrimp, newborn and now 3 week old longfinned pleco and Betta fry in it right now (all fish will all be moved in the next 3 weeks).