Plumbing

Hi Folks,

Just wondering what people think about internal vs. external return pumps (say, for a 200G system). Anyone have any advice? From what I gather, external pumps are more expensive to start with, but have a longer lifespan and don't add heat to the system. Does the sump have to be drilled in order to use an external sump or can u just use pvc pipes to go up and over the sump wall? I guess doing so would affect the pump pressure/performance, right?

Also, do most ...