a follow up on this :
he died.
errr, the other fish i have in there now are a yellow tang, maroon clown, 2 perc clowns, a blue damsel and a coral banded shrimp. I know I know, they are kinda jumpy fish, and dont like to get picked on, but from the other research i had done, it'd be ok as long as i didnt let them pick on him before he got settled in. He did get settled in actually, went to the bottom left corner, sat there for about 15 mins, and then began to dig his hole. 2 days later he was dead, but i watched him die.... was rather weird actually. His gills flared out, he like, began to convulse, and then he was dead. Nothing been picking on him, i was watching him closely. Did tests on water, everything was in check so im not quite sure what happened.