[acidrain]

Thank you Lance. I was hoping I wasn't stepping on toes by even bringing up the subject. As you said, the professionals are a stuborn bunch... rarely will they give away any secrets. I was actually approached by Randy with questions of how I am able to have such good results with the graphics I'm doing. I gave him all my secrets only to find him not really wanting to give me any of his (with regard to sprayable dyes).
He was very open with the subject of CV though, and that's how I even started thinking of it.
To answer your question, my tank is approximately 40gal... a large plastic bin supported with a insulated plywood box. I use both air and circulatory agitation. I learned early on that the temperature of the bath made a huge difference in the final product. I also observed how it affected the volts as well. I worked hard at building a system that carefully controls the bath temperature, and find my setup VERY consistant.
My system is really running well. There is no reason to change anything except that carefully measuring the surface areas of intricate parts seems to be the biggest time consumer of my operation.
More experiments are in order before making any permanent changes to my proceedures.