Just wondering if anyone else has had a similar problem. I just recently added a solenoid to me co2 setup and it's been working good. But now I have to readjust my co2 bubble rate every day. At night when I go to bed, I'm at a bubble or so every second, but when the system kicks on in the afternoon, it comes on at about a bubble every 5 seconds. So I have to redial it in every day. Doesn't make sense. My needle valves have little lock screws, so I locked it down tight last night, but sure enough it came on today at about 1/4 of what it was yesterday. Ready to go back to 24/7 co2 since this is more work, and I can't count on it all of a sudden.