The plant itself looks very healthy imo.

This leaf has already been breaking off slowly over the last week(s) or so. It’s one of, if not the lowest one, and I belive the stem is just growing so fast and thick that it might have been just ripped apart, so I don’t worry about it.

Today, I noticed some powder residue sitting on the upper area, mainly the stem.
I highly suspect a fungal infection, most probably powdery mealdew.

And I mostly believe that it is just a stress symptom of the plant. I trimmed off quite a few roots and also forgot to water it a few times over the last weeks, because it’s just SO thirsty due to all the sun it’s getting now in the spring.

It sits in a hydroponic medium (semi hydro with LECA) and has been extremely healthy over the last few months. Still, this, and the high humidity fluctuations (one week 20%, the other one 80%!) were super stressful for it, so I don’t wonder myself about this.

It also looks quite a bit dehydrated and nutrient burnt right now, but that will look better tomorrow.

Question is: Will there follow any leaves that will break off?
I think the mealdew problem is fixed quickly, maybe by itself if the plant recovers from the shock.
Should I worry?