When to move rockwool seedlings to dutch buckets

[gdgdad]

Stan, per your post, I soaked a rockwool cube and placed it on top of the aeroponic cloner bucket (see pic in previous post). I marked the time @ 3:20 pm, and when I checked at 7:00 pm is was still wet and a fairly "heavy". So as I suspected, these things will hold water for many hours. I picked up the cube again today and it is indeed still damp - the next day! Any suggestions on sprayer timing revision?
Also, I added in an aerator,(two stones), and just left that running, figure I can't over oxygenate the water.....
Two tallest seedlings seem to be "stretching" toward sunlight, but they appear to be starting "true leaves", albeit very small (see attached pic - 2, might be difficult to see). I'm turning the net cups periodically to get them to lean in the opposite direction. Again, bucket is sitting outside on my lanai.
Temps have cooled to upper 80's, humidity 46% today, tomorrow morning in 60's, upper 80's by afternoon and humidity about 52%.
Thanks!! GDGDAD