Wifey and I made a kit batch of Orchard Breezn' Blueberry Shiraz on Saturday. We followed the directions that came with the kit, and pitched the yeast on top on Saturday night. I saw what I thought was a bit of activity last night in the air-lock (one of those danged 3pc ones :S). This morning when I checked on it, it looks like the heat belt dropped and the batch had gone down to 68 or so deg. Now tonight when I checked, no more activity. Did I kill the fermentation with the brief cold snap? I took an SG reading, and it's 1.050, same as original SG measurement. Should I wait it out, or pitch new yeast?
TIA
TIA