Please Help! I have two fairly new yeast mixtures in my DIY CO2 setup (one is a week old, the other one is about at the 2 week mark). Last night, the whole tank was pearling and everything was hunky-dory. This morning, I look and all of my diffusion bells are almost EMPTY!!! What the heck happened???? From the lack of CO2 my PH just went up to 7.2 overnight when usually it stays around 6.7 or so. The only thing I did was clean the filter last night. YIKES! HELP!