I have just set up my first saltwater tank and decided to start slow with a 20 gallon tank that I had from when I experimented with freshwater fish. I decided to just do fish and live rock with such a small tank but was considering buying a nano tank in addition to the one that is set up just to further the experience with a reef before I go all out with a large tank because I am positive I will become addicted. Any suggestions if this is a good idea to experimented with the two tank or bad idea? Thanks in advance for inputs, I am learning so much from this site, thanks to all the great members for helping newcomers like myself!!