"man ... really on a 200 ton system..... thats a lot of bubbles... lol"
Even when I do use a leak detector, I can only get a general idea where the leak is. Soap and water is still going to have to tell me where the leak is. At the company that I work at, none of the techs ever use leak detectors, either. The 400 ton units that I worked on in the Navy were low pressure chillers. An R-410A will blow much better bubbles than that R-114 from the same size leak.