Hope this has uploaded properly, the only thing that may be different with your tank is the recommended quantity of developer, put the reel you want to use (no film in it!!!) in the tank, and add water until its 20-25mm over the top of the reel, then measure how much water there is, and that's how much developer/fixer you need! If you are doing different film sizes, you'll need to repeat this with the reel set to each film size you plan to use...Phil