It seems that Ahmed Morad was really impressed by the masterpiece "Breaking Bad" series. The idea of killing Waleed Soultan by putting diamond dust in the sugar packets, is the same idea of putting Reiseen poison in sugar packets for killing Lydia. Also, getting rid of El service by melting his body in acid in the bath tub is the same idea in the series. But the writer forgot that the acid will melt the tub too and may be the ground under it. Thank you Vince Gilligan for caring about tiny details in such a wonderful series.