Had a powdery mildew scare this week, turned out to be a false alarm. I may have overwatered a little, but the plants seem to be doing well and growing on schedule. I used Fox Farm Ocean Floor soil for the solo cups and I think it may have been too hot for the seedlings. A forum guy advised me to change the soil so I got some Kellogg's organic potting mix and used that with some perlite, about a 60/40 mix. Still haven't used any nutes yet. On to week 4!