As shown in pictures, I have something going on on the inside of my carboy. I sanitized using bleach and I racked yesterday into carboy. I rinsed out and waited for residual bleach odors to evaporate as usual and have never had problems before. I can't see what else this may possibly be, but it appears to have started at the mouth of my carboy/in the airlock and bung and has creeped down to about an inch from my brew. Is this some sort of contamination? Is it a bleach residue? Something else all together?