Manifold Design

[espieg]

So I’m planning to plumb a manifold on my new sump setup but I’m unsure of which layout I should go with. Do you think it would be better to use 2 pumps, one for the return, and one for the manifold in a different section? As far as pumps go I have an eco tech vectra m2, a Neptune cor 15, and a various 2. My original plan was to use the cor for the return and the varios for the manifold. But I am unsure if the varios will be able to feed my 25 watt uv, chaeto reactor, and one or two other media reactors.
Thanks

 

[espieg]

These are some rough sketches of the 2 layouts. One if I were to run it off of a single pump, the other if I were to run the manifold off of a separate pump.