Some odd behavior with this Eerie biome. Almost the entire thing converted back to original biome, however there are 4 or 5 blocks that refuse to convert no matter how many hours they are under the influence of either Ethereal Blooms or Silverwood Trees/Pure Nodes. I'm trying all methods and these stubborn single blocks will not convert over for some strange reason. It's... kind eerie.
I've also been trying to push back an invading Taint biome, since I now have 4 of these Ethereal Blooms, and at a certain distance away from my base, they seem to have stopped working. So naturally, I assume it's because they're out of chunk-load range. No problem - Dimensional Anchors chunk loader in place, come back in a few hours... and nothing has changed. So chunk loading has no impact on Ethereal Blooms. Why is that? I just dropped an Angel Block and will AFK for a while to manually load the chunks and see if my presence actually gets them to work.
Edit: well it appears the Blooms did work, however the purple color didn't go away and it fooled me into thinking they didn't do anything. As soon as I moved them, the Fibrous Taint immediately begins disappearing. Maybe I need to push it back farther before the purple color to the grass goes away.