Well it's now day 4 or 5, hard to tell, it's been such a long journey! The Diamond Disc still have yet to turn to mush, even after 4 days of having been in the Ultrasonic. Even I thought that it would be wrecked at this point (more than it was when it went in).
Again, this experiment is NOT intended to make everyone believe that you can clean these discs this way. ONLY to show that you can use a LITTLE bit of water and brush to get the worst off. I think we all imagined that this record would have bloated and cracked beyond repair. Interesting where a little trial and error to back up our theories will get you...