Need help with tank plumbing (first time)

[albert_dao]

Propellar style powerheads will add a lot less heat to a tank than a large return pump. That said, you still might want to consider something beefier as a return pump. Maxijets SUCK with headpressure.

Also, if you use a larger diameter pipe, there will be less friction as the water travels the length of the pipe. This translates into increased flow rates and less wear on the pump.