Thank you guys I think I misundertood about the difference between IV and EV.Reset bag does work but only on EV's (soooooo much better than EV reducing berries, unless you make a small mistake), EV's and IV's are not reset if they breed. You can't change a pokemon IV's unless you hack (and don't!).
Might want to hit up a guide:
https://www.reddit.com/r/pokemon/comments/1pdzya/iv_breeding_guide_quick_ev_guide_links/