ok being 14 and on a tight budget i need to know what i can do for a good tank setup. i plan on saving to get a a 240 gal. tank or bigger but i want to put my 9" oscar in it and my 11" pacu in it along with some other fish. but how can i set this tank up to make a wide variety of fish happy. this being filter setup and tank setup. i think i am going to go with sand as my starting idea but i need a little push to make it better. i just started on this hobbie as my age clearly states and i only have a 55g tank and a 30g tank. i usually use the 30g tank for feeders for my oscar but could be used for something different if need be.