Ultrasonic cleaning

I use a Klaudio machine and add three drops of Kodak Photoflo to my water tank. My water is both softened due to where we live and also reverse osmosis filtered. 

I use Klaudio's ultrasonic machine and distilled water and that suffices for the vast bulk of my LPs.

Same here.  I still have my VPI 16.5 that gets used for really dusty/dirty used records.  

Fbgbill, What exactly does the photoflo do? 

I use an Audio Desk to clean using their cleaner.  I rinse using a Degritter with only their wetting agent (Rinse Aid).  Most records are dead silent or nearly so.

I have a different regimen before play depending on whether the record was purchased new, used, or was previously in my collection. If used, I use my Record Doctor with a 4-step cycle of Audio Intelligent 15, AI-6, distilled water rinse, and then into the ultrasonic using AI-Ultrasonic fluid. If new, I go straight to AI-Ultrasonic. If after play I notice any surface noise and inspection reveals no obvious cause, before the next play I use a 3-step cycle of AI-6, distilled water rinse, and ultrasonic with AI-15. For records previously played without surface noise or recently cleaned using the above process, I use the G2 solution followed by a microfiber cloth over a record brush to remove any excess solution and dust particles.

Most relevant to OP, my ultrasonic step had been using Tergikleen but I found the AI-Ultrasonic produced noticeable better results.