Um... well. It started as 4 guppies and 4 Cories, an appropriate stock for the tank (which has a larger filter than necessary). It is very well planted.
Soooo a few months in I suddenly had a LOT of guppies. I was hoping the parents would eat some of them... but no (my roommate feeding them 4 times a day didn't help). In the mean-time, I nabbed/rescued a small Bristlenose Pleco from Pet Supplies Plus. Enter Sushi, a very healthy Clown Loach I found at the PetSmart I work at. After eyeing him for a few weeks I decided to introduce him to do some potential fry clean up. Fail. He's a lazy bum. So was Sashimi, his partner in crime. Then we accidently got a shipment of baby Syno cats in under the name of another fish. So we HAD to sell them for cheap... so I got one. Then I got a small tank and found a Celestial Danio for it. After some problems with it (no filter/experimental tank), she ended up in the 5g. THEN we got some really pretty Clown Loaches in at work that I wanted for my 90g... thus the addition of two more. And last week a co-worker found two baby Auratus cichlids in one of the tanks. One didn't make it but the other is living happily amongst the baby guppies.
VERY long story short- fish were added very slowly over the course of seven months. None of them are large ATM and I keep up with the tank maintenence. The tank is also heavily planted. All will be moved to my 90g at the end of this semester.
As good as my luck has been, I do not recommend trying it!
The set-up has worked well for the short-term, but I am anxious to move my guys into a larger tank so they can be more comfortable.