What....

Hey Well over-all your plants look amazing for living in 122 degree environment!🤯😁 Where you're getting that discoloration between the veins...little sections...that i always think of magnesium. But then you've got the other spotting and 1 leaf that looks like exactly half of the leaf is yellowing(that one can sometimes be a mutation). As for all the leaves, make sure you've got calmag available...either by double checking the ph or adding some more in. You may need to do nothing if they're going into the super soil...I would maybe wait until then to see if problems fix on their own, but still worth double checking the ph of your water...hopefully the buffers will work that out but I think knowing the initial starting water is important. Ive had some ph pens lose calibration and now I try to regularly check their accuracy. Happy growing.