HI Ralph,
I have a large square Kreonite Printing Plate Washing Sink I bought for $40 (basement of MPEX) I had a Contractor plumb in and carpenter. Develop a lot of film in that sink.
In the other side, I have an 8 Foot Plastic Delta Darkroom Sink I dragged out of a Friend's garage for $50, it was hanging out the end of my car, roped in, to get it home. A Contractor plumbed that in, I made a sturdy base out of plywood and 2x4's.
The "Laboratory Rack" my former repairman made me to hold eight 4x5 Black Plumbing Pipe Developing Tubes. I fill the bottom cap with Developer, then load the tubes with film in the dark. Then I can flip them over and develop like using a BZTS tubes type system.