I've noticed my one clown has come down with brooklynella. He's currently in a 15 gallon column tank with 10lb live rock and 10lb live sand. He doesnt look like he's going to make it. What are my options now? Should I let the tank run fallow for 8+ weeks? Or should I just break down the tank and let it dry and start over? I also have 5 hermits and 1 emerald crab in the tank as well. Thanks in advance!