Hi guys, I've had an IPA that did 2 weeks in primary (2nd week with LOTS of dry hops) and I switched it to a new glass carboy about a week ago to condition for another 2 weeks before bottling. I noticed yesterday that all of a sudden there's white bubblies at the top. Is this mold or something related to the trub/gunk from earlier and the dry hopping?
I always vigorously clean my gear and dowse everything in iodine sanitizer.
See pics and let me know if that looks like mold or something else. I've never seen this.