Ok -seems like such a noob question but this is my first external pump and I bought it used without any lit. Which way does water flow through the pump. This is a blueline with 1" connection in the center of the cap by the impeller and a 1" connection on the side of the cap. Does the water flow in through the center and out the side or the other way around? I'm trying to finish my plans and I don't know which way the pump will sit.
