Interveinal chlorosis

Looks to be some sort of interveinal chlorosis just started a few days ago they are about a week in flower. The temps have been hotter because there has been a heat wave so that could be the issue but wanted to see if anyone has experience with this. Lights are 2 vipsrspectra xs2000, Temps 80-84 humidity 52-55% Growing in a 65 gallon living soil bed, coots recipe 3rd run, reamended with craft blend. I just top dressed with big 6 micronutrients, build a flower and some build a bloom for flower. I did a slurry test reads 6.6 ph. I usually run earthboxes but I’m trying to get this bed down but the watering hasn’t been the best I wasn’t watering enough or too much don’t really know I have an ecowitt reads 30% in the middle but the soil seems a bit dry a couple inches down I bottom water and top water to try and compensate but when I top water plants droop a bit so I don’t want to keep watering but still the soil seems a bit dry a couple inches down. Anyone got any ideas

You could ass a mulch layer. Brush it out of the way when watering, then cover back up.
That should keep the top layer moist a little longer.
As far as the discoloration, for me it's hard to tell what it really is. Maybe someone who's seen this before can chime in.