I am in the planing stage of a tank that is 72 inches left to right, 21 inches back to front, and a huge 42 inches tall. Topping out at 260 gallons, I'm not quite sure how I'm going to filter this tall thing! I have a 55 gallon I want to use as a sump and I have an idea how how to lay that out. But if I drilled the tank and got a few small power heads to move the water would running the sump be enough? What should I add or change? Filtering this tank will make or break the tank. I plan on keeping plants and discus, so that water needs to be top notch. Thanks all!