My freind is getting a 20 gallon freshwater fishtank and is willing to spend around 200-230 dollars on the tank. The tank comes with gravel,rock,plants and the hood(top). The tank doesnt come with lights but that not a problem cause he already has the lights for it. How much money do u think it would cost him to get the tank set up,with fish,and what kind of fish,plz give suggestions.