SandMan Hydro Defficiency Issue! Experts needed!

Hey ILGM family!

I noticed the second day of flower that a couple leaves in my grow have these markings:

I asked a Facebook group and they said to just trim them…but could this be a sign that I’m not doing enough?

Temps are around 68F
Feeding:
Mammoth P
AN Sensi grow
AN bud candy
AN bud igniter
Hydroguard
Silica

Thank you ILGM family!

Need a pic.

Got it updated. Been having internet problems this morning!