Okay guys, I need y’all’s help. I bought a purple tang and a lawnmower blenny together from the same store, and dropped them in a tank. The tank had a clown that the purple tang beat up really bad so I moved him. Five days later the lawnmower blenny is dead and the purple tang died last night, both from (presumably) a severe case of ick. White spots, clouded eyes, looked exactly like ick. So now I have a tank with zero livestock but a recent record of ick, how long should I wait before trying to put fish in there? Is there some medicine I can dose the tank with that won’t harm my corals? Thanks!