I'm not suggesting this is any magic formula, just that good results can be achieved with less in our recent experience. As to the EDTA, there is a small amount already in the Hepastat product. If you are using de-ionized water throughout, and pure reagents, I don't feel there is much need for additional chelator. OTOH, if you are hand washing and initially rinsing with filtered tap water, or storing solutions for extended periods, I would include it.
The MSDS shows it contains a non-ionic detergent (unspecified alcohol alkoxylate) along with some quats (one being Benzalkonium Chloride, which we have discussed using previously in this thread). It appears the solution is more dilute than Hepastat, containing 2-10% quat and 1-5% non-ionic, so you will dilute less. Still enough dilution that I wouldn't be concerned about the high pH of the stock (10) however. Looks like it could work very well and definitely worth giving a try. Let us know how it works out!
LOL. You and me both brother! Surfactants can greatly aid in the US cleaning process. I'm not sure whether this is due to the effect reducing surface tension has on cavitation as some suggest (I'm no physicist), but records come out cleaner when they are included. The tricky part comes later, in the subsequent drying step. Using anionic dish soap and wiping with a cloth is a proven recipe for static build up. There is some benefit to wiping with a softened cloth (quat-treated) but I personally prefer a vacuum method as it minimizes exposure. So one CAN use dish detergent in a US tank effectively, as long as they have a means to deal with the subsequent handling.
Speaking of static and wiping, I recently experimented with materials made with Thunderon (copper sulfide infused fibers developed by Nihon Sanmo in Japan). The conductive brushes made by Gordon Brush that combine Thunderon with Goat hair work very well at reducing static charge on records while removing light surface dust. They come in a variety of sizes, and places like Sleeve City and Acoustic Sounds have them at available marked up prices (Gordon Brush is much less, but requires a minimum qty 6 order and other industrial supply houses require min $50 orders). Either way, brushes offer much less cost and greater convenience over the folder apparatus with this fiber sold by Furutech (their SK-X-III at around $450).