Hey, buddy. The yellowing of your plant is probably a nitrogen deficiency. It is easy to see that the veins of the leaves remain very green while the rest of the plant is very yellow. It could be a Mag deficiency that looks a lot like it, but Mag deficiencies attack the lower part of the plants. The discolouration of your plant is very uniform, which makes me think more about nitrogen.
At this stage you should have started giving them nutrients, despite your mix of all mix and light mix.
I advise you to start their fattening program as this is likely to happen on your other damsels. Me, when I have a pronounced dry nitrogen deficiency like yours, I add nettle manure on top of my fertilizers, it is very rich in nitrogen and I find this product perfect in this case. Moreover, you can find it in any garden store.
I wish you happiness with your plants. Peace KrautFabrik✌️
🤘😜