CleanerVinyl Ultrasonic record cleaning system.

Rushton,
Thank you for this most informative post.
Do you feel Tergikleen is the way to go? 
I will look strongly at the vinyl stack and ultrasonic cleaner 40Khz vs 80 Khz later being 3 times more expensive.

Rushton, I have seen your formula and seems very reasonable and am planning on using it. The reason I asked about the TergiKleen is that it was posted after your post on your formula and wanted your opinion. 
I fully understand, not overloading the the cleaner and the 1 inch separation.  When cleaning 2-4 records at a time do you feel the inner sides and the inner records get as clean as the outer side of these records or better to just clean one record at a time?