Hi I would like to introduce myself to this forum. My name is Bob and I have no idea why I made the user name "slippery" My friend is selling me his 600L tropical setup and I must say is very impressive, it includes several species of fish which include a school of silver dollars. I originally intended getting weird and different fish which encourage visitors to explore the aquarium's contents. I have limited knowledge with tropical fish as I have previously kept and bred reptiles. In some ways I am lucky as my friend will help me with the water and tank environment. I spotted your forums and felt I could gain some information and tips which can assist with the well being of my new interest. I would also like to pursue breeding but thats down the track when I learn more about the maintenance.