Air-lock left off for first 36 hours

[BullGator]

So I brewed 2 batches Sunday morning and got them in carboys around midday after pitching a yeast starter in each carboy. I ran out of the 'S' type airlock and only had the cup type left. Well I had it filled with starsan with the lid on but I forgot to put in the internal cup thing that actually makes the seal. Therefore, I essentially had open fermentation for about 36 to 48 hours until I realized it this morning.

Now looking at the lid, the air holes are very small so odds are I'm ok. But what are the chances I just made 2 sour IPA's?

 

[duboman]

Slim to none, fermentation begins gasses are produced that would push anything bad out, even if there was little visible activity, something was going on in there so I would not lose sleep over it one bit!

 

[HeadyKilowatt]

As long as you pitched healthy yeast colonies (and if you made starters, chances are you did), the yeast should be able to out-compete anything else that may have gotten in there. You should be fine.