Sorry, missed your second question there.

To measure my effluent rate, I just take a 15ml measuring spoon and count the seconds it takes to fill. I run my reactor at 60ml/min so I expect it to take 15 seconds to fill the spoon - and just adjust accordingly until I get it close (it's pretty fussy work getting it dialed in just right).

You could always get a peristaltic pump but they tend to be pricey. There are those that are fixed-flow for around $80-120 but you can also get adjustable peristaltic pumps but they tend to run in the hundreds to thousands of dollars (depending on how used&abused a model you can find on ebay or whatever).

i just have the lil valve open all the way, is it unsafe to run it all the way open?

My guess is the units then are probably "thousands of kPa". The bubble rate is not abnormal. So long as your effluent pH is at 6.7 (or where-ever you want it set at), it should be pretty safe.

Assuming you get 100gpd out of your 100gpd RO/DI (usually you don't get the full flowrate out of those things, but let's just ignore the details for the sake of guesstimating the flowrate :lol:) that's. . um .. 100gpd =~ 400 litres per day = 400,000 ml per 24 hours ~270 ml per minute (1440 minutes per 24 hours). Hmmm, ok, that seems a little fast.

60ml/min is basically on right on the verge of starting as a steady stream, whereas any slower it's actually perceivable as a "fast drip-drip-drip-drippety-drip."

Basically I'd just take a known volume container (measuring spoon, measuring cup, whatever), and count how long it takes to fill up to a certain level, from that you can figure out your flowrate.

ok thanks..i will do that.

well it did 88ml in 15 secs LOL, I think that is too fast

Make sure you also kept an eye an your Alk. Found with my reactor if pushing it, very easy to spike the Alk.

alk should be around 9-11 dkh right?

Good range, NSW is something like 8 dKH.

Help!
ok I got the effluant down to 60ml/min and now i have to turn the regulator all the way just to get to 0.1 and there are no bubbles... Tony..help me lol

Ok .. um .. hmmm. I guess the question I have is, how did you dial down the flowrate? Is the valve on the output of the reactor or the input?

Your regulator - you should have a main pressure adjustment knob and a needle valve - you should be able to just open the pressure knob a little more to increase the outlet pressure, thus giving you some bubbles?

Can you post a picture of the regulator?