I had 5 blue green chromis 2 black ocelaris clowns and a magnificent foxface. I added the clowns two days ago from qt. One clown was dead yesterday morning as well as one chromis. Todya after work I found he other clown dead. The Foxface is a baby and hides from everything. Is it possible one of the chromis is a bully? My parameters are Ammonia 0 nitrates 5 Alk 9.5 PH 8.0 not sure about phosphates as I don't have a way to test. The tank is 90 gallons. I also have maybe 10 Snails of assorted types and 4 soft/lps corals. Both fish were fine in QT.