The R O bucket

[Greenthumb]

Also, I added a pressure gage between the pump and filter, and flow meters with built in needle valves in the permeate and concentrate lines. I removed the small needle valve that came with the RO bucket and instead use the concentrate flow meter needle valve to dial in the balanced flow between permeate and concentrate. The needle valve on the permeate flow meter is left wide open. Flow meters with a suitable range for such low flow are hard to find, I ordered these from amazon:
https://www.amazon.com/uxcell-Thread.../dp/B00EZ3T1GM

Red Creek-

So you used two of these if I am reading your post correct. One telling you flow into the micron filter and one to slow the permeate flow instead of the brass needle valve.