After I read FxOpen UK's FAQ page, I learned that they do require a minimun trading volume of 0.1 lots with 0.01 lot increments. This kind of requirement brings trouble concerning how to set Margin slider properly.
Do I have to slide Margin to the value which is much larger than its default(50$) with merely 5000$ initial deposit just to make the deals done?
Or is switching to another broker who requires no minimun trading volume a better solution?