well after over 10 years of having a saltwater tank I have a hawaiiain trigger that I have had for over a year and is about 6" long and a problem I've never seen or heard of.about a 6 weeks ago I was doing a water change in 155 tank .Because of both my home and business being flooded in the spring I haven't been doing maintanance like I should but the fish are all healthy physically.because my substrate had some funky looking layer about a half inch under the surface so I decided to thoroughly clean it and I hung a filter sock in the sump and stirred the bottom really good just filtered the water back into sump .did that for about 30 to 40 minutes.then did a regular water change.my trigger was always swimming around nonstop before this. after doing this water he won't swim anymore ,he just sets on the bottom of the tank.if you prod him he'll move to another spot in the tank.he hasn't ate since then that I've seen.I finally put him in quarantine with some prazipro to treat him for possible parasites.after a week in quarantine there is no change whatsoever .has anyone ever had this happen with a fish,or know of fish whisperer that I can get to talk to my traumatized trigger.Thanks Butch