My in-tank powerhead (a Jebao WP10) just died and I've been needing to replace my main circulation pump for some time. I've got 4 1" returns at the top of my 42 gallon tank and am thinking about just putting in a large single return pump to create a gyre instead of having water sloshing around the tank. I'm keeping mostly softies and zoos with a few hardy SPS thrown in to tinker with. Two questions: Any reason this is a bad idea? Anyone have a favorite pump at the moment? I'd like something that's external for space and heat reasons, and am seriously considering spending the extra $$ for a DC pump. Something that I can wire to be controlled by my Apex is even better. Any thoughts are appreciated!