I use a red safelight. As I said did the test, no problem. As far as exposure times anywhere from 20 to 50 sec. Dev time as much as 12 min. w/ constant aggitation. I tryed the Ansco 70 again the other day at 1:1:16. Again took forever to start to come up and then just stalled after 9 min. My lens is set at f12. I use a 150 watt bulb in a condensor enlarger. Again looks overall flat gray in highlights. I did try one thing. I put 1 gram of Metol in the mix. In 2 sec. the print was completely black. Potent stuff! This of coarse was after it was already diluted. Talk about infectious.