I have a clear plastic dome on top of the black tray to increase the humidity. I'm going to let them stay like this for a little while and then slowly open it for an hour one day, and a little more each day until they are exposed to less humidity. Hopefully it will help them harden up to normal humidity!
I was reading somewhere about the humidity though: "Initial Humidity ;In our humid growing situation we don't need to do anything about providing the just-unflasked seedlings with extra humidity, but you may need to in your situation. Extra humidity for a few days, gradually decreasing, can help the seedlings adjust to their new environment. Care must be taken to not overdo the humidity, though. Excessive humidity will promote rots and molds, and can very quickly kill the plants. Here, we have a stiff breeze from circulating fans to prevent high-humidity troubles. If you decide to tent the seedling pots to provide a shelter with extra humidity, do not completely close the tent. The seedlings need fresh air and enough ventilation to make sure the humidity doesn't go over 80%. The tent should gradually be opened more over just a very few days to allow the humidity to be 65-70%. As the seedlings toughen, they should be able to handle the normal humidity of your growing area, though generally 60% should be the minimum for extended periods of time."
And here is the final set up.
I'm very excited for these little seedlings! I hope they do well.
I found that this link was very helpful.
https://lab.troymeyers.com/flasking/....php?number=15