I made my first batch Friday night. Sometime in the middle of the night/Saturday morning it began fermenting. It was getting a bubble about every 10 seconds in the airlock. I checked it this morning and nothing was happening! I checked again around 6 am and still no bubbles! What happened? I have the bucket in an unused bathtub and the stick on thermometer said 74 degrees. It got cold last night and I didnt run the heat in the house but I cant imagine it got below 70 degrees inside. It fermented for less than 24 hrs! Any ideas?