I am almost done plumbing my Red Sea 170, and I built a manifold and most of the hard line for the return line. I am not sure if I should do the rest of it, to where it connects to the return pipe, with soft tubing or if I should do it all with hard pipes. Please let me know what you would do. Soft would be easier and it will cause less head pressure for the pump I think, but hard will look cool and I already have the parts available for hard plumbing it vs soft, I would have to order parts. Here’s a pic of what I have so far.