I was thinking about starting a small saltwater tank but I dont know where to start. I thought the 30 gallon bio cube was pretty cool but is it too small or should I start with something smaller? Also I want to make it a nano reef because I think that would be a little more exciting. What fish would be good to start out with? I wanted to put in a couple of fire fish and a clown but I dont know if they are good for starting or not.