I bought my current 185 off of a guy on Craigslist who still had 3 yellow tangs and 1 clown tang from the system living in a 40 breeder. He said if I wanted any of them I could have them. As it would be a while before I was going to have this up and running and my current system at the time was a 120 that already had a yellow tang I only took the clown tang. He hands me this poor fish in a Tupperware container and looked like he was put through the ringer. Fins shredded and chunks missing from his body. Life was not good for him a 40 breeder with the three yellows apparently. Get him home and quickly get my QT set up for him. Fluval 13.5 gallon AIO, perfect QT setup. Get him in there get light on him and notice ich of course. So I start treating with copper and feed nori. Two weeks later this guy is looking great, fins are healing, wounds are covering up, ich is gone and he’s much fatter. I’m feeling really good about myself right! So two weeks to go and I can add him to my tank so clown tang is happy, I’m happy everything is great. Well he makes it all the way to 4 more days before he is out of QT and I find him dried up on the floor! The lid was on the tank. If anyone is familiar with the fluval 13.5 you are aware that the factory plastic lid has a feeding slot. This slot is not big at all and I honestly never thought this fish would fit through but he hit that one in a million jump and went through at some point during the night. I couldn’t believe it then and honestly when I think about it now I still can’t! I ended up cutting some clear mesh screen from the BRS screen kit and super gluing it over that slot from underneath so that never happened again. From that point on no matter the unlikelihood of it happening I always took it into account in every system since then! That was a heartbreaker.