ok so brewed yesterday, gravity reading of 1.035, pitched the dry Danstar Munich yeast at 3:30pm [no started with the dry packets right?].... no action in the airlock last night, however, this morning was going quite rapidly.... Tonight i come home and nothing.... in fact, normally when the yeast finishes fermenting, my airlock stays in the "up" position, meaning no more CO2 is coming for it to bubble, but there is still some holding the plastic piece up... well tonight that plastic piece is back down??? Should i re-pitch? take a gravity reading? or just wait??? normally if it hadn't started yet, i wouldn't worry cause it would be a little over 24 hours, but when it started then stopped i got a little worried.. Thanks for any replies!