Brook got to my first clown. I used a fish in cycle (I now regret I know how stressed that can make fish) and all was well and cycle was even complete. Thats when I noticed labored breathing and mucus plus some spots and almost bruises. Took him out and put him in qt tank and dosed him with formethorine (I think thats the name I remember) but sadly, he passed on. How long do I need to wait to add more fish/ I have corals and inverts in the tank still. Do I need to remove these? And qt them? By removing the fish, can I leave them as I understand they are fish only parasites that cause Brooklynella. Any help is welcomed!