I definitely appreciate the input - but my situation seems to be opposite from what you say:
Just turn up the flow until you have CO2 begin to escape before being absorbed. Then turn it back a notch.
I never have co2 escape, but I do get co2 buildup in the top of my reactor when my flow is too low
. Running my filter on max flow is the only way to prevent the buildup.
The main reason I want to switch from everything being in series to using a manifold and running some components in parallel is to cut down on the resistance and hopefully improve the flow coming out of my 206... so I'm going to great lengths to eliminate elbows and long lengths and make it as tight as possible.
I agree that the UV light would ideally treat 100% of the water, every pass through - but slower flow is better for UV. I see my choices as:
-Run parallel, slower flow
: full treatment on what water does flow through, keeping the population of undesirables below a certain percentage, if not at 0.
-Run series, fast flow
: partial treatment on all water. Maybe it's the pharmacist in me, but I can't help but see this as a setup for selectively breeding the heartier organisms, killing only the weaker ones with brief (inadequate) UV exposure.
But again, I definitely appreciate the viewpoints expressed. Not trying to argue, just trying to sort it all out to a point that makes sense in my own head and build the manifold that works for me...