I use a 20x24 print washer that I wash 3 717 negs in at a time. works great. wash them for about 5mins then give them a HCA wash, then back in the 20x24 print washer. I keep them seperated by 4 old wine glasses stems. works wonderfully.
I use tap water in a tray with holes drilled in the bottom. After that they hang out for a minute in a tray of distilled water and then off to dry. Nothing fancy but it works.