I just brewed my first beer, a pumpkin ale, placed it in a plastic fermenter with a 3 piece airlock (starsan in the airlock). Room temp around 78 (proper temp for the yeast though on the high end). This morning when I woke up, the airlock was not bubbling and the liquid was a little low, I added water to the fill line and capped it. It then started bubbling like it was earlier. Do you think I messed something up? Do you think air was able to get in? The liquid did not look too low but again this is my first time