Please tell me what is it?

[jby]

In week 6 of flower gelato, there are some white grown on the tips of the bud, they are just here and there.

 

[TripsRabbit]

Light bleach/ burn, too close to the lights.

 

[PK1]

i can't even see that on pc nor can i zoom into the pic

 

[Poekie]

Light bleach/ burn, too close to the lights.

Yes indeed.
Also burnt tips of the very dark green leaves, a bit of overfeeding.