I purchased this yesterday at my LFS, just to give my tank a little boost in the CO2 department. When I got home, I set it up, followed the directions step by step and I have some issues. 1) The PSI for the CO cartridge was not at 100% when it was punctured by the regulator. It was halfway. 2) I could not for the life of me get any CO2 to come out of the diffuser. Even if I blasted the CO2, the bubble counter would erupt and water would leak out of the counter. Only once did I start to get bubbles out of the diffuser, but the bubble counter was leaking profusely and that's no way to get the job done. I called my LFS and their first questions was if I was doing it correctly. First, I understand they need to ask that question, but I've been doing this longer than the 18yo kid who answered the phone (who also when I brought my water parameters in for a sanity check, did the first part of the nitrate check and said my water was fine). They said because I opened it, they could only give me store credit. Uh, how else did I realize it wasn't working?? Does anyone have any thoughts on if they've experienced anything similar or what I should do? This was an investment I had thought about for awhile now, and I'm wishing I never got it.