Friar Donk writes:
[2] Some of my seedling cells have what appears to be mold growing on the
top of the soil. The seedlings don't appear to be affected by this yet,
but I'm wondering if this could be a potential problem and if so, any
hints as to how to get rid of it. I read some tidbits about using a
baking soda/water solution as a spray but I'm thinking that might affect
the soil pH too much.

You can get soil surface mold if you've used mushroom compost, manure, etc.
I'd just scratch the surface and break it up. As far as a home-recipe
for mildew: you might like to try a spray of full-cream milk + water.
Try 1:3 for a ballpark ratio. I've seen milk+water spray recommended for
mildew on roses, so may well work for edible plants. One theory is that
it's the oil (fat globules) in the milk that is the "active ingredient".
Powdered full-cream milk is said to be equally effective, and cheaper.
--
John Savage (my news address is not valid for email)