You were right about the bubble nest! He's already started to build one! (I just got out of class, too!)
It's lined along the length of his tank in a single row and there's a few individual spots here and there. (Almost as if he's laying the foundation for the biggest bubble nest ever....?)
He's even flaring again at my tablet pen and chasing my finger around the tank. Frankly, I can't see any more of that ich on him, period. Looks like the fungus might be hiding, too.
Augh, but his water's all murky-lookin' now.
Gotta go take an exam so I'll have to change it when I get back in about an hour and a half... (Exams are the bane of my existence.)
I kinda hope I can buy a Whisper filter later today. That'll probably help keep his water just a little cleaner (and make it so the water changes will be less frequent, and thus less stressful).