....:smoking: top plant looks pretty much OK to me, was that leaf from the bottom? Lights can make this difficult, but it seems to me the plants are a bit too green,... likely a cumulative N build-up to near toxicity, so bloom only from here out, and seriously look into a PK booster that has little to no N in it,... don't sweat the "organic" part of this if yiu use a little synthetic PK bloom booster, it won't queer anything up for quality,... I run a mix of organic and synthetic, and keep in mind the plant doesn't know or care either way, only the same specific nute ions can be absorbed, whether derived from organic or synthetic sources,...
2nd plant: how close are the lights? I'd say you have a micronutrient defc. starting there likely B... most of these are immobile within the plant, meaning they cannot be taken from older leaves and translocated to the new growth/buds for support, so symptoms always start there first and worst,... I'm not sure what you can find in EU for a dedicated micronutrient supplement,... I'll ask a mate or two and see,...