When can a forex trader use 1:1000 leverage? – General Forex Questions & Help

I have been using a lower leverage since the start. I’ve never exceeded 1:200. Now I am considering increasing my leverage from 1:200 to 1:1000. This is the maximum leverage provided by Forexchief STP/ECN broker. Has anyone here used up to that leverage? If yes, how did you manage the risk?