Howdy, Its been a few months since I hit my darkroom and now I want to get back into it. Unfortunately, it looks like the Southern Australian summer has a bit of a head start and at the moment, we are experiencing temperatures in the mid to high 30deg C range. The other thing of more of a concern for me is the low low humidity. Yesterday I noticed that it was down to 8% RH (& doesn't my sinuses know it!!!!). To keep the dust levels down in my dark room, I was thinking of introducing some Humidity, whether by a humidifier or by routing some air in from our evaporative cooler. The easiest option is the Evap cooled air, but this will mean quite a lot of air movement (stirring up what ever dust has settled.). My concern with a humidifier is too much humidity, which may cause condensation (I also haven't done too much research on these yet). Is there a maximum humidity I should have set in the darkroom?