So I was given several items to start a ro build. I'm looking for info which I've looked the last two days through the ro section without any luck an might just be looking over it. Here is what I have on hand
Two 4x40 membrane housings as
Two 4x40 membrane
Brackets to support housing
Feed pump
Procon series 5 190gph

What I have to get.

3/4 hp carbonator motor 48y body for prison pump
All the fittings which I have a list I worked up
Gagues 0-300psi

Now my questions are ?
(1). Flow will be down one membrane an up the other since they will be in series?
(2) what do I need for rotameter flow meters an do they both need to be adjustable also if not what on goes where?

I know the procon should be a 330gph but this was given to me along with the membranes since my biddy had them as extra an spares.

Any an all advice is welcome never thought I would go this route bit here I am.thanks in advance cpmaple