Thanks for taking the trouble to research this for me. My problems are not specifically with maintaining a consistent temperature (although I appreciate that this is important) its more the very short development times that I find difficult. With the Jessops own brand I used to use development was at about 40 degrees and took 21/2 minutes. I do not intend to use my Jobo processor for developing films. I will use my trusty Paterson tank (with dedicated reels reserved exclusively for colour processing).