Okay, so, I'm not new to the hobby, and this is about an already-established tank, but I'm not sure what other board to put it in. Hope this is okay!
One of my tanks is a 5.5 gallon, planted, and currently it has 3 male guppies, 3 amano shrimp, 1 nerite, 3-5 assassin snails (to kill off those...