I live in a three bedroom condo, with just one other room mate. The main tank I brought with me (which was just 2 months ago) is my 180g "large community" tank (if you missed the thread, I posted a couple pics of it in GW, so search for "180g" if you want to see them).
My room mate and I often eat at the glas table in front of it and stare at the fish swimming (and sometimes eating with us).
Upstairs in my room where I feel it safe to have "a couple of tanks".... I keep my 10g planted (1 crowntail betta, 1 queen arabesque, 1 flash pleco (clown), amano shrimp, long lived feeder guppies, and 2 koi CAE, and one "leucistic" CAE... I know.. I have an odd taste in fish.
The tiny 6g Eclipse in my head board has 3 large inhabitants... 1 bulb with 4 red dwarf lillies growing from it.... and 2 Anubias nana... oh and a zebra rock... the contrast of colors makes me space out on them sometimes... (I guess I sound like a hippie aquarists right now and i'm only 20...).
Lastly, is my 29g SW. I was hoping to turn it into a reef eventually, but with heat conditions, I don't think I'll be able to. So I might just go with FOWLR. Currently, the only in habitants are 3 Blue fin damsels that are tiered in size Large, medium, small...(I think the owner likes me because I'm a regular so he took the time to choose those fish without me asking) and millions of microscopic organisms crawling all over the live rock and sand.