the pump will be a via aqua 2300 600 GPH, the sump will be 42" on the ground, beside the tank stand. Will i need any powerheds in the tank? can someone show me a diagram of how the return pvc will look like going up to the tank?
Unless you are planning on using the left side as a refugium, I would move the baffles toward the left so you have more than 1 G worth of evaporation before you start sucking air.
If you're thinking about using a 10 gallon tank. your backpack won't work too well, unless you lengthen the input tube. ( I just threaded mine with a 1/2" iron pipe fitting. Then threaded on a threaded pvc fitting.