Ok everybody. I have had a 5 Gallon tank for a while now and I want to get a 20 Gallon. The problem is I don't know exactly what to put in it and what equipement I need. I would like to know what type of filter I need and what fish can I put in. I really need a basic setup plan. I have kept small tanks, but not a larger one like a 20 Gal. Any fish expert out there that can help?. Thanks. Suggestions are recieved with arms wide open.