My Dad and I have always wanted one,and my Dad has LOTS of experience with freshwater fish. He once had 2 5-gallon tanks,3 10-gallon tanks,3 50-gallon tanks,and 2 100-gallon tanks. But they were all freshwater. So we were wondering about how much the initial up-front cost of the tank,fish,food,plants,ect. would cost,and about what would it cost after that?