I would like to ask you something regarding my last brew. I have a 15l batch in the fermenter and I added 11g hydrated Safale US-05 yeast for my APA more than 48 hours ago. I wasnt at home, but I know that today the temperature on the fermenter was 13 degrees. I moved it to a warmer place and it is now 15. I dont see activity in the airlock, but only when i actually moved the fermener, it was bubbling for maybe 30 minutes and it stopped again. Can you give me an advise? I dont have more US-05 yeast with me, but only Nottingham Ale yest and cant get more in the next day.