Hey everyone. I just refilled my 5# CO2 tank today for the first time and I have a few questions. I have a pressurized system with a Milwaukee regulator/ electric solenoid setup and ran it with no problems the first 3 months. Yesterday, I think my tank started to DUMP but I happened to catch it in time. (there was still CO2 in the tank when I disconnected it, but not very much). The reason I think it was starting to dump is that my bubble count which is normally set at 2-3 bps was suddenly running much, much faster. Like 4 or 5 times faster. And I live alone (no one else to mess with it.) The fish are fine, I did a large water change immediately just to be safe. SO..... I got the CO2 tank refilled today and when I reconnected it, I got a prominent leak from the set screw on the left hand side (below the left tank gauge). I've never noticed this set screw before, let alone adjust it. It wouldn't stop losing gas. So I used a small screwdriver and tightened it bit and the CO2 stopped flowing from it. WHAT is this screw for?? And why was it leaking gas? Did it come loose possibly from me moving the regulator around? ANYWAY. my other question is this: How long should it be before the bubbles stop in my bubble counter after the solenoid shuts off? It seemed to be immediately the first few months I ran it. NOW, the bubbles seem to want to run a really long time after the solenoid is turned off. The solenoid is right before the needle valve and bubble counter (so there shouldn't be much gas trapped there) and it seems like maybe the solenoid isn't closing.....but if I turn off the solenoid & let the needle valve out considerably, I get a considerable amount of C02 before it runs out (like multiple hours worth @ 2-3 bps). I have no idea whats going on here. Did I damage something letting the tank dump?
