Rust colored streaks can anyone help ?

[Happygrower10]

Rusty orange colored streaks sprayed insecticide on it the other day because i noticed lil thrips or aphids
Anyone got any general advice on what to do or seen some shi like this ? Anything helps yall

 

[themda]

Don’t spray plants with lights on or with direct sun light. This looks a little more like a cal/mag deficiency

 

[Happygrower10]

Don’t spray plants with lights on or with direct sun light. This looks a little more like a cal/mag deficiency

Oh man for real ? Dose a calmag def eat away the leaf like that at one small spot on the leaf ? Or would it be all over also when would I spray the plant at night's?