Hey bro not sure if this has been mentioned, but I think the droopy leaves are from lack of oxygen getting to the roots. Try letting them dry out a bit and lessen water amounts.
I think the reason they perked up was because they dried out a little??
I don't think your humidity or temps were off enough to induce VPD.
Plants look great and very healthy so your doing something right!! Just a few tweaks to perfection IMHO.
Hey Bio thanks for coming by. It has been on my mind that they look overwatered - but the sub irrigated reservoir on the EarthBox has always been great at regulating soil moisture content (in my limited and anecdotal experience). In between the time they perked up and drooped back down they didn't receive any water, in fact they haven't had any for days.
Perhaps because they're not able to transpire and/or because the roots are too cold they're not drinking and the water in the soil is sitting?
Either way my idea has been to get the temps in the root zone back in range and give them a day or two to drink and see how it looks. I just got done insulating the floor beneath the boxes with some stall mats and adding a small heater on a temp controller. The heater positioning is less than ideal but will have to work until I can build a little lung box or something. Where it is it should blow warm air off the wall and into the tower fan for distribution. I put the temp probe between the boxes so it would be an accurate reflection of the temperature right in the center of the root mass.
Please forgive how sloppy my tent looks I'm not really able to do things like cable mgmt etc hopping around on one foot. Just trying to make it work for now:
This does make me think back to my earlier discussion with
@Aqua Man where he basically forecast the roots not getting enough oxygen as a result of the mulch cover. I don't like second guessing myself but if I can't get this squared in the next few days I might have to consider reversing my position....
