Wed Feb 24:
Stretching stopped and second true set of leaves are starting to grow. Still haven't needed to water seedlings since potting them aside from occasional misting, still misting with distilled water. White Rhino has been looking slightly overwatered (cotyledons are more droopy than on the other plants).
Blueberry (fem) hasn't grown at all-still has a hard texture (part of seed?) on upper part of the stem and one cotyledon is small and pale, but doesn't seem to be getting worse either. Will post pics next week. Should be interesting to see how the plant turns out if it survives.