Soft Coral only here but then I do only have a 13.5 gallon tank. With all the rock and coral there isn’t much swimming space or water volume left. Even without all that I personally feel the tank would be too small for fish. I drip everything for 90 minutes as that’s what the place I buy from says to do, never actually questioned it.
theory is that ammonia builds quickly in a bag of fish or snails so its nest to just get em out. the coral is going to take a harsh bath in poison so imo that drip is pointless too.
just my opinion