I finally hooked up my Ca Rx in early January (bought it back in May or June). After several issues with poor craftsmanship (nothing a dremel couldn't make better), I finally got it to seal and run. I kept having issues with the CO2 drip rate. I'd set it at about one every second or second and a half and two hours later, it wouldn't be running, or vice versa. Then, after about a months worth (actually less) of running, I ran out of CO2. There had to have been a leak. It's a CR6, so it's huge, but at the drip rate I was using, there is no way I used 5 lbs in the reactor. There had to have been a leak. Does anyone have any other ideas? I checked the ORing and it is fine (everything was brand new). I'll soapy water leak check the tank head and the valve connection when I get it refilled, but is there anything else to check or that makes sense?