Ime no it,s not a problem, but it,s best done as soon as the light comes on, that way you get less r.h when the light is off. Also your other minor problem with the leafs looks like a little nute burn nothing to worry about imo, if you look closely you,ll see some on most peeps photo,s have some. Your pests are a cunt at this time of flowering you can,t realy do much without it having an efect on the end product, what i,d do is get some liquid oxygen/oxycal 17.5% mix 60 ml per ltr and spray the plants, the oxy turns back to pure water after the 4th oxygen molecule has oxidised bugs,eggs larvea anything organic it touches. wear gloves and eye protection don,t think because we breath oxygen it it,s harmless! You can also get food grade hydrogen peroxide known as oxycal/liquid oxygen at 35% for less £
Flowmasta that,s some tasty looking bud.
Goodvibes there nice healthy looking youngsters.
ATB folks Tcd