It does take a few days for fish to get used to a new home. My two clowns have been in the 125g for months and months and still they never leave the back top wall area. lol It's just what clowns do sometimes...
If your parameters are all good and they were acclimated properly I would just sit it out for a few days and see what goes on. They probably just need more time is all...
180g Reef - 60g Rimless Reef -90G FOWLR- 125g Malawi Cichlids- 40b REEF- 34g Fresh Planted-working on- 20L FOWLR- working on
I have a mix of many different saltwater fish amongst my tanks, but I love my Tangs most of all.