so i've build a giant tower with a large field surrounding it, and i want to turn a portion into a tainted biome. before i start i want to know if the taint can get through solid obsidian (which is what my tower and the base of the floating island its on is made of). i've quarantined off the area i plan to taint with pure nodes surrounding it so it cant spread to the rest of my island but i want to know if i should make a pure node barrier between the tainted land and my tower?