I work for a large company and just the other day I got denied request to set up a small aquarium in my office. There explanation is that it is considered an appliance and that is prohibited. I responded and informed them that I will have only regular office light as the only source to an outlet and no filters. They said no aquarium of any type is allowed. I am disappointed since I spend a majority of my day in my office and what's more relaxing than looking at a nicely setup aquarium! Company allows potted plants why not ones that are in water? Anyhow, even though this plan didn't pan out, I still like a little input. From what I have read the following setup should work. I have an unused 5 gallon hex aquarium. I was thinking of putting top soil and substrate in there with fast growing plants. I would put a amazon sword smack down in the middle with anacharis lining around the perimeter of the hex aquarium like a roman columns. Both plants will grow big(well sword) and tall so under which I might have some low light plants. I'll have some hornworts on top and some community fishes. I don't need heater since in my office, the temperature is pretty constant year round. No filter as I have read in the forum that it's not really needed for small tanks. Since the tank is small, overhang office florescent bulb should be ok. I have outside window that gets some light in the morning. I'll also have some snails. This should be a descent setup right?