I have to agree with Bill there, I remember when I was taking an early photo class, my professor was talking about how developer is generally used at 20c, my friend and I looked at each other and smiled....we then boiled the the water, mixed in the hc110, developed the film...the result was predictable (crazy contrast, emulsion boiled away in the highlights, etc, etc), the professor was joyed to be able to talk with my fellow students how it all worked, one of the photos is one my all time fav's....learning, experimentation, find your voice....