Working on my new 200 DD build, and starting on the plumbing. The return, for now, will be a Mag 9.5, and this is the manifold I'm using. The manifold part for reactors and such is 1/2 inch, where the input/output is 1 inch. The outlets on the top and third output are 1/2 John Guest fittings.
Any issues with what you see? Good? Bad?
Any issues with what you see? Good? Bad?