Picked up my juice on Sunday and I forgot to grab a yeast packet. I have 2 buckets one is moving right along on its own and the other isn't. My questions is do I have to add the yeast? If so, if I add it on Wednesday will hurt anything? I live in FL and the juice is in the house and the A/C is on 77. Can I add the yeast to late? My SG was at 1.30 last night, is there a point where adding the yeast will hurt the wine?