Finally got my first brew underway. A Muntons pilsner. I was worried as the temerature was high 76f as it is still warm here in turkey but after about 12hrs it was off like a train. Twenty four hours later I took the air lock out to refill it. Replaced it & went to bed. Today there are no bubbles in the air lock at all. Have I blown it or will it take time to build back up ?