Best Special Effort Values Training Spot
If you're looking to boost your Pokemon's Overall Special Stat through Effort Value (EV) training, look no further than Route 19. If you surf on the waters on this route, there is a 100% of a Tentacool appearing. And every Tentacool you defeat will give you 100 EVs towards your Special Stat. Since this Pokemon has a constant appearance rate, a player can literally surf over and over and abuse this in order to get their Pokemon a better Overall Special Stat.
Players can also use the item Calcium to boost their Pokemon's Special EVs, increasing the EV Stat by 2,560 until the first 25,600 Effort Values are reached for the stat.