Im running carbon in a reactor, and i did a water change this morning. This is my first wounded nem, and my first instinct wasn't a hospital tank. After all my research once i got things together and the nem placed I see that a ht would be a good option. If he tries to relocate again i will definitely move him to another tank. He he is currently, fresh pic. My first nem didn't help me out at all in this situation, he loved where i placed him from the get go and has been great. I did watch a ton of videos on prepping for nems, which is why i had the foam cover for the powerhead.