Hello all. I'm just now excitingly getting back into terraria after learning of the 1.3 update. I very much enjoy the game, but there's just one thing that bothers me. The constant spreading of the hallow and corruption has always intimidated me. So I was wondering if some of the more experienced players could tell me the best way to stop the spreading (both above and below ground) and contain them into their own sperate biomes. Would anyone be able to help me by chance?