I hooked up my first CO2 system a couple of weeks ago (it was Red Sea's CO2 Pro system plus the solenoid). I also got a 5 pound CO2 tank and hooked it all up. It has been running at around 1 bubble per second for 10 hours a day. At that rate I went through the five pound tank in about 2 weeks. I was under the impression that the CO2 would last a lot longer than that. Is it possible I have a leak in my system somewhere?