'i got an idea to help people to EV reducing there own pokemon' ..we know that ev's is total 252/252 in 2 of you'r iv's so natuer give a chance to chose between,lets take an exampol
-ampharos atk base and spatk too you trained ev's as :atk/252
:spatk/200
but there u train ev's for your def for exampol more to get :def/52 .. now you want to reducing this status def to become 0 for exampol you should use EV reducing berries called(Qualot berries).
-here is the list of EV reducing berries
-Pomeg Berry – Lowers a Pokémon's HP by 10 EVs.
-Kelpsy Berry – Lowers a Pokémon's Attack by 10 EVs.
-Qualot Berry – Lowers a Pokémon's Defense by 10 EVs.
-Hondew Berry – Lowers a Pokémon's Special Attack by 10 EVs.
-Grepa Berry – Lowers a Pokémon's Special Defense by 10 EVs.
-Tamato Berry – Lowers a Pokémon's Speed by 10 EVs.
-these berries also increase happiness level by 10, 5, or 2 depending on the current happiness level.
-you cant get them from a mart or somthing in game the only way is bought from player's or go to route 13 befor geting to route 14 there a tower there called berrie's tower in kanto finish battleing all trainer there u will get 10 berrire's every time from a girl in the finish line she standing by a tree in wild grass area inside that tower.
'Good luck every one'