Twisty nano's build

[twisty]

So I'm going to be purchasing a return pump. They guys @ J&L recommended the Sicce Syncra. Anybody use these pumps?

I'm having a hard time figuring out what one to use; re head loss.

I plan on running both tanks with one return pump. The top tank is about 4.5' from the sump in height. I'll measure it tonight.

I also want to create a manifold, so I can plumb media reactors on the same pump output.

Any idea which pump I should run?
Syncra 1.0 - 251 GPH <-- don't think this will be suitable.
Syncra 2.0 - 568 GPH
Syncra 3.0 - 714 GPH