Great place to start to unravel what, if anything, may contribute to the unhappiness. Always rule out water chemistry first, it, many times, is either the source, or contributor.
A .15ppm nitrate level is way low especially for softies who like to mop up those nutrients. So if true, bump that to say 5-10ppm.
In addition, the unknown phosphate level is problematic, too much and we see a unwanted algaes or bacterium, too little and corals starve, zero possible trigger of Dino’s.
Measure and bring that to say 0.05-.1ppm.
Leathers are notorious for sulking for weeks, hate to be moved, hate to be touched, either of those can cause days of unhappiness.
These two essential water characteristics must remain available, stable and in the correct levels. All 8 parameters must have little to no change in 24 hours.
With rock solid chemistry, everything you place in will acclimate quickly, you should see happiness in the first 24 hours, although leathers again, I find are slower.
