Andy_27
Well-Known Member
Hi guys,
I put on a 2L starter of 3068 last night. It's on a stirplate in a temp controlled fridge with the probe taped and insulated to the side of the flask set at 23C. Sometime overnight, the fridge has tripped the circuit breaker and everything turned off. I checked on it this morning and the temp showed about 9C and there was a decent krausen of an inch or 2. I turned everything back on and as soon as the stirrer started up, the krausen started building. To bump up the temp, I turned on the heater on the stirplate which is not controlled at all, so I dont know how hot it gets. The krausen built right up almost as I watched and a small bit leaked out the top of the flask. I monitored the temp controller and turned the heater off at 22C. I checked again at this point, about 30 mins all up, and the krausen had dropped right back down to an inch or so. Is this normal or is it possible the heater killed the yeast? I thought it would be ok since the solution was all spinning and mixing rather than sitting on the heater...
Cheers!
I put on a 2L starter of 3068 last night. It's on a stirplate in a temp controlled fridge with the probe taped and insulated to the side of the flask set at 23C. Sometime overnight, the fridge has tripped the circuit breaker and everything turned off. I checked on it this morning and the temp showed about 9C and there was a decent krausen of an inch or 2. I turned everything back on and as soon as the stirrer started up, the krausen started building. To bump up the temp, I turned on the heater on the stirplate which is not controlled at all, so I dont know how hot it gets. The krausen built right up almost as I watched and a small bit leaked out the top of the flask. I monitored the temp controller and turned the heater off at 22C. I checked again at this point, about 30 mins all up, and the krausen had dropped right back down to an inch or so. Is this normal or is it possible the heater killed the yeast? I thought it would be ok since the solution was all spinning and mixing rather than sitting on the heater...
Cheers!
), but my understanding is if the stir plate is left on (EDIT: not your heater) you won't get much or any krausen as the CO2 is being forced out continuously in exchange with air, so not producing much foam.
