A one yr update in case anyone searching cares. I started out with maroon clown, humu humu, sf eel, kole, bluespotted puffer and several yellowtail damsels. About a month later I added an auriga butterfle and racoon and small juv emp. angel. All died in the next few weeks. the damsels quickly died off for whatever reason. In Sept. the Kole died for unknown reasons. The maroon lasted several months then succumbed to disease. In mid fall I added a blue ring angel and lawnmower blenny. In early winter I added an adult emporer angle and a month later a miniatas grouper (coral hind). After a couple of months my sf eel was dead. Him and the grouper always fought for food so I think grouper took him out. Satisfied with that set up til mid spring then I added a yellow tang from my reef tank that was nipping at corals. A couple weeks ago tried to add another kole but the grouper mercilessly attacked him. I was able to rescue him to the reef tank were he healed and is doing fine, although a little skittish around my regal tang. and then last week added a niger trigger. He was slightly larger than the humu and I left niger in the bag all day in tank and then added him at night after all the fish were sleeping.
No problem with him and the humu or the grouper, isn't that neat. The niger and humu have been swimming together and doing fine. the emporer still chases the smaller blue ring a bit but nothing serious and they have doen fine together for 7 months. The original humu, puffer are doing great and never had problems with them. blenny is left alone and nobody messes with the grouper although him and the puffer got locked up the other day when the grouper tried to steal food out of puffer's mouth and ended up locking onto his nose! But he let go and all was fine. So here's my current and hopefully final setup and list
Adult Emperor
Almost adult blue ring
lawnmower blenny
Miniatis Grouper
Niger trigger
Humu HUmu Trigger
Yellow Tang
Blue spotted puffer (toby)
Hope this info helps others