I won't have a room for a dedicated darkroom anytime soon, so I have to use one of the two bathrooms in the rental apartment. After one photographer explained to me what a "developer's droop" is, I don't want to be developing paper and the droop at the same time. I can't make holes in the walls for a vent, it's a rental appartment. There is little air movement. The ventilation system of the building is enough not to suffocate while you're showering, but not enough for paper processing. I'd be happy to hear your ideas to this problem. I can think of two so far: 1) Self Contained Breathing Apparatus 2) a respirator mask hooked up to the outside. I'll get clean air at minimal cost. 3) sulfur dioxide respirator? Is there anything besides sulfur dioxide that's harmful? I want a darkroom, but not the fumes. :confused: Thanks On the upside I won't have to worry about butane heaters in the winter.