I do all my spraying in the morning so the sun has all day to dry stuff up, 3% will not burn or bleach the flower the h202 for hydro is fine to use just find out what % itis an dilute it to 2-3 %
I feel its to late for lady bugs get in there an squish as many as possible then spray the plant down with 3% peroxide repeat at least every other day dont let them get ahead of you.
Hows the dew looking? I ran a bunch a few yrs back I liked the green pheno better than the purple one but the purple was always a few weeks faster at flowering.
Just take that top be careful doing it turn off fans because those spores love to get airborne If it was me I would get some 3% peroxide spray that top down good before messing with it.
Pics not the best but looks to be something off, Did you notice that sugar leaves on that bud dying off an if you pull on them they come right out without pulling