Hi there, I've had my darkroom set up for about a year now but haven't used it in a few months because I was away at school. Today I just went and mixed all new chemicals (developer, fixer, stop bath) and it doesn't seem to be working. I tried a few test strips and on the first few nothing showed up. So I tried uping the amount of light exposed and time exposed and still nothing. So then I tried a different paper and finally had a bit of an image appear but again, was exposing them for longer, etc than usual (these are pictures I have developed in the past...was just wanting to enlarge some of them). So I'm wondering if this is to do with the temperature that my chemicals are at? My darkroom is in a basement and we have A/C so it is pretty cold down there but when I used them in the winter time, it was still cold and I had no problem then. I am sure that the developer should still be good as I bought it shortly before christmas. If anyone has any idea why this has happened, please let me know! thanks!