My name is Ruben, I'm 49 years old and just got back to the fishkeeping hobby since I had almost 29 years back a fish tank in Cuba with a lot of fish and every body was happy and live together with no problem at all. But now I have a 75 gallon freshwater tank and start reading about some fish and I found all the information about the nitrogen cycle and is like getting into a new world. Some fish can't be together, not all food is good for all, etc. So I'm reading and reading and learning a lot about how to take care of the fish and a lot other details. Then, searching online I found TFK and this forum have a lot of information that will help me to properly take care of my fish and tank.