I cannot get a consistent bubble count on my reactor. Everytime the solenoid kicks back on the bubble count goes from 1 bubble every 6 sec to 1 bubble every 12 to 15 sec. I am constantly having to adjust it during the day. If anyone has had similar problems that can give me advice how to rectify the problem, I would greatly appreciate it. I am thinking maybe a bad regulator or needle valve? Thanks.

