16x8 is pretty big. If it is a permanent darkroom and you intend being in it for more than a couple of hours without a break then consider ventilation but if you have even a short break for 15 mins then opening the door and or windows will quickly refresh the air.

Give it a try without ventilation and see how you get on.


Normal processing involves exposure to dev, stop and fix. Nothing really noxious there.

pentaxuser