I feel bad to come here with such a simple potential mistake, but it has potential to change a lot!
I started a batch of cyser on Saturday night , and everything appears to be working properly (bubbles rising to the top, etc.), but, I found out this evening (about 48 hours after pitching the yeast) that I had forgotten to fill my airlock to the fill line with water, so it, in all likelihood, wasn't serving much function.
So, my question is, is there a possibility that overlooking this detail could cause contamination? And how could I tell that it is safe/unsafe? Aside from a more noticeable scent, I can't spot anything that would be going wrong, but I am certainly not an expert.
Thanks in advance!