I have 2fx5's on my 130gal at the moment, and I'm wanting to upgrade to a tank 250-300gals by xmas next year hopefully, I plan on having 2 oscars, rtc, silver arowana, and my pbass might add another or two we will see.... Will 2 fx5's be enough to filter a tank that size with them large fish ? Hoping to get one that drilled and has overflows so I can always setup a sump system (once I have money and understand it) which after buying a new tank won't be for quite awhile lol all depends on tank prices at the time by I want a MIN 24" wide tank 36" max...