I'm curious to know how other seed sowers handle the problem of damping off. I use a high content of pumice in my mix so that the mix dries out relatively quickly. I also have sterilized the soil, but , unfortunately, besides killing pathogens, it also kills beneficial bacteria. All seed containers are soaked in a Sodium hypochlorite / H2O solution before being used. Here in the Pacific Northwest, even under cover, a seed pan can stay moist for a long time, which can be a problem. Even with the ends of a tunnel left open for circulation, the air is full of moisture. I used to be a greenhouse grower, so have had a bit of Benlate left.... when all else fails. It would be interesting to hear others cultural practices.