I have the Milwaukee regulator, and the regulator itself is fine. Its the fact that the bubble counter is mounted directly to the solenoid. This lets water come into contact with the valve, which eventually corrodes. i removed the bubble counter and factory needle valve and made a remote bubble counter and put a new needle valve right off the solenoid. This solved all the problems. My reactor is a DIY unit and i run the large Gen X media. It holds close to 35lbs of media with room for Zeo mag on top. I would suggest the 20lb bottle if you have the room for it.