I'm using a small plastic tank and developing 120 b&w film. I'm pretty clear on the first step. I'm using HC-110 and I have the tech sheet from Kodak and other resource information. I am unclear on what to do after I pour out the developer. I know I add stop, fixer and rinse but I can't remember how long I keep the stop in and how I should agitate during stopping and, how long I should keep the fixer in and the agitation process during this stage.