Update...

Due to digressions in the ICH batte I moved all of my fish (tang, 2 O. clowns, mandarin and blenny) to a 20 gal quarantine tank. the first day went well and the fish were looking good, but I woke up this morning to find all but the blenny dead. I didn't have time to do any testing, but I'll do that when I get home. More info to come...