I have decided to try my first go with a C41 one liter kit. I will be using a Paterson universal tank. I have two questions: Is it possible to increase development times and use developer/blix chemistry at room temperature and get usable negatives or must I use the 100 degree method? Directions in these kits show that one can develop at room temp with rotary type tubes. If it can also be done at room temp with my Paterson please advise on the appropriate times to use and any special agitation techniques that might be needed. Also, would you recommend getting a new Paterson tank specifically for color work, or can I go between color and black and white chemistry with the same tank with thorough rinsing? Thanks for any advice you can give me.