As the title says .... what pedals can I add to my Zoom G9 ??

I want a good distortion lead tone and a good and reythem ... sorry for my English ...
doesnt your zoom have something on there that can do that? if not my first recommendation would be get an amp that can do that, if not then what style of music do you play
The zoom can do that just fine but you see it's a little bit digitalic ... lol and I want something that can change to a better sound .... btw I have a peavey studio pro 112 65W