I have a problem. Sometime over the last two days I experienced what I believe to be an end of tank dump. I have a do!aqua 35 gram co2 cart system with single stage regulator, solonoid, and diffuser/bubble counter. The diffuser/bubble counter being one unit a glass tube that is filled with water and has a ceramic disk at the top. Co2 bubbles from the bottom through the water and diffuses through the disk. Normally after the co2 is shutoff for a few hours water completely fills the tube and after it is turned on it displaces about a 1/4in of water for a co2 pocket. I found an empty diffuser no water at all and an empty co2 cart. The weird thing is I did not loose fish. When I used to run 1 bps the cart lasted a over a month. I am now running 2bps and I got 3 weeks out of the last cart but I just replaced this one last week. I don't understand what happened. It should be noted that I just found out about end of tank dumps and have been letting my carts run dry.
So my questions are 1 was this a end of tank dump so soon after replacement? 2 how do I prevent this again? 3 do I have a pos co2 system that is a lost cause?
Also I only have a 15 gal tank so I don't need a big co2 system.
Thanks for the help.