I just don't believe in stocking up to max limits, so I play it more conservative than most. More fish equals more food and more waste in the tank. That means more nitrates and excess nutrients. That leads to nuisance algae. Hell with that!! :grumble:
Either way, I still think he's overstocked in the tank. Better start saving for the lights and skimmer for the bigger tank..... or get rid of some fish if there are no plans to upgrade.
I got ONE little tiny clown in my 30g tank and really have no desire for another fish. Okay, maybe ONE little fish that won't exceed 2" when fully grown, but that would be my absolute MAX in a 30g tank. I wouldn't mind some shrimp and other inverts, but Nemo is going to get 3" or 4" long and thats probably enough fish for a 30g tank.