Mbuna stocking?
well i wouldnt put any more in becasue your oversticked as it is. So try and get a bigger tank like a 125 gallon or something.
Is this a good size tank for just one fish?
Some small fish certainly do grow big. You can buy a 1 inch Oscar that will reach 12+ inches, you can buy a 2 inch Pacu that will reach 3 feet. Of course, both of those fish will die in your tank. The only thing that you could keep in your tank is a ...
How deep should gravel be in tropical tank?
Since you don't have any live plants in your tank, 3 inch maybe is a bit two much. I'd say about 1.75 inch of gravel is sufficient. Your tank should have sandy gravels since corycat like to dig the tank for food. Also, it is very hard to keep the gra...