6% Profit During a Week

A week has passed and all my EA produces 6% profit from the Initial Balance. Of the total profit is 1 / 3 resulting from EURGBP pair. And pull it constant obtained every day for a week. Maybe if you run Scalping EA on several pairs at once, usually you will find that every day pair producing more profit will be different every day. And I think it was a good thing, because then diversification is working properly.
What about the EURCHF pair? I still think you can rely. It's just that maybe next week it my open time will shift from 19 to 20 GMT+2. This is based on the fact that often at the end of the UK session was already very low volatility and tend to increase until the closing of the American market. In the last week recorded frequently executed trading at 19 GMT +2, it gives a negative result. But I have not thought of to stop it because after all the great profit potential is still there at this hour.
For USDCHF and USDJPY pair I thought I would still use the trading time 22-23 GMT +2. Although the latest optimization shows that both pair can be traded (scalp) until 4 GMT+2. But I think in the medium term will be very volatile. But instead I will add a new pair of USDCAD. Recently I tried to add the VS_EUROCROSS Fractal indicator, and the results are good for USDCAD pair. Thus I will add this pair in my account next week.