Ok, I got Hydrogen Peroxide 6% from a chemist. I used equal parts Hydrogen Peroxide and water to get it to 3% concentration and soaked 2 cotton pads and let them sit on the 2 places where the damage was and also poured a bit into the crevices of the plant. I left it there 15 - 20 min and then I whiped all leafs on both sides with the same solution.
Is that all I need to to? Should I reaply another time maybe? How will I know if it worked?