fast forward a few days. each set of new leaves takes life. the last pic shows some droopiness on the right. lights set from 24 hours on down to 20. RH is now constant 20%. Now that I think about it Ive havent seen it change since this period. Maybe the thing is stuck. Ill test it here in a bit. :stoned:

Air is being drawn from below the box right up through the top with a eight-inch fan that came in it already. Maybe bigger. It draws well enough, I just had to take the reflector off the light to get direct airflow over the bulb. Tips of leaves get burnt when they sag down onto the wet nutrient-absorbed Hydroton. This could easily be fixed w/ a cover over the net pots. Due to laziness and wanting to make sure my circulating system is not clogging I have yet to do so. It's probably a really good idea to work something up later.