I know the rule of thumb: 1 inch of fish per gallon of water, but here is where I'm at. I have a 30 gallon tank stocked with 5 platys, 4 Cardinal Tetras, 4 Ghost fish, 3 Rose tetras and one cory cat. I ran into a snail problem recently and decided to get a Clown Loach. After researching a little more I realized they work better in schools so I got 2 more for a total of 3. Add them to what I already have and I'm sure I'm pushing the envelope (so to speak). So here are the questions: 1. Will the Loaches limit their growth based on the size of the tank? 2. Could I have stuck with one? 3. Am I OK with what I have or should I do something else? Any feedback would be helpful.