Hi! I'm new here and I actually live in Belgium but since plastic coops are not yet used by many, I'm trying to get some more information here. Because this summer we have had many red mites, so much that we had to decommission one of the wooden coops we had. Which means that I have now six chickens in a coop that's not meant for so many chickens. That chicken coop has also given the best of itself in two years and is litterally just falling apart. So I needed a fast replacement, large enough for my chickens that I currently have + a bit more for some natural breed. We have these two IBC totes that we are currently rebuilding to a chicken coop. But I'm wondering about the ventilation. We have placed the tanks next to two walls in the back of our yard, in the shade. Unfortunately we only have shade there so there isn't really another option. The chickens run around freely in the garden, but we need to close the coop during nighttime for foxes and possible other predators. But for ventilation this can be done with mesh. How big should I make the ventilation holes? The doors, do I also make them in mesh? Do I put these tanks under a roof?