I wanted to know how much is enough for a 29 gallon aquarium. Right now I have 4 silver hatchetfish, 6 neon tetras, 3 cory cats, and 1 clown pleco (gets to around 4 inches). I plan on adding 3 more neons and 2 bolivian rams. That wouldnt be overstocking but I want to add another small school of deep body tetras. Would that be too much?