Hi, I developed three roles of film in three different tanks and they all turned out the same greenish cast on the emulsion side and gray on the plastic side. I checked my exposure, temperature, development time, and sufficient agitation were all correct. Could the D76 developer stock (diluted 1:1) was too weak? I used 11 min for Ilford HP5 ISO 400. I used a Patterson two reels tank system and loaded one reel with film and inserted the second reel without film. I used a total of 10 OZ of working solution. Perhaps the problem was loading the empty second reel that prevent the 10 OZ of working solution to properly develop the loaded reel. I did not mix the D76 and is available in a shared darkroom (without supervision) in a community college. Thanks so much for any suggestions, C.