Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
Ours just recently started doing this, just the last 6 weeks or so. I thought it was the new emulsion we were using, but perhaps not. What emulsion are you using EB?
ours stinks after a month or so as well.. just as easy to change it out rather than risk changing the chemistry of the emulsion.
Ours starts stinking a few weeks after changing the water. Instead of wasting water (which is kind of the point of the thing)is there something we can add to it that is emulsion friendly but bacteria un-friendly?