I just picked up a BTA from my LFS, and I was planning on finding a Black Widow BTA to go into the same tank eventually. When I showed a picture of the nem to a buddy of mine who is super heavy into the hobby, he told me that the nem I picked up was a wild nem, and it would nuke any aquacultured nems that get put into the tank because the aquacultured ones have been in closed systems for so long that they've lost their ability to fend for themselves when it comes to nem chemical warfare. Has anyone else heard, or experienced this? I'd like to learn more about this.