I use an Igloo 60qt Icecube as a swamp cooler at home. I put the BB in the cooler after brewing and pitched my starter (a mix of WLP029 and WLP051, dont ask, i drank alot that day) and in my infinite wisdom, tossed a few bottles of ice in with it when the ambient temp in my apartment was about 66. Fast forward to morning, the beer is coming out of the airlock and desperately needs a blow off which i put on. The kicker is that the beer is at 52ish degrees. So yeah, dont worry about the yeasties, i dont think they know how to sleep haha.