I brewed a west coast IPA on Wednesday evening and it was happily fermenting away until some point last night as when I checked in the morning all airlock activity had stopped, krausen had subsided and all debris on the surface gone. The OG was 1.055 and it has stopped at 1.016. An apparent attention of 70%. Based on Beersmith it should finish at 1.010. The yeast specs say attention is between 75 and 82%. Those two things to me suggest the fermentation is stuck. But over the course of the day I've tired all sorts to get it going again; I've roused the yeast, I've warmed the temperature and I've pitched more yeast. Nothing has seemed to work. My question is is my fermentation done, or is it stuck?