Copperband Swimming Upside Down?!?

[NastayNatron]

So I have had a Copperband in quarantine for almost 2 weeks now with a Leopard Wrasse and a Diamond Head Goby. He has been eating Mysis, Brine, and Plankton like a pig. I have been feeding him 3 times a day since I got him. Sometimes I soak the food in Garlic Xtreme and Selcon. I have been keeping water quality high by doing a 5g waterchange every 2-3 days. It is a 29g quarantine running between 78 and 79.5 Degrees.

I noticed over a week ago that the Copperband has the Lymph Virus. I have been watching him closely and he is doing great. For the last couple days I have noticed him hanging out upside down. It seems to be happening more and more . . but other than that he seems healthy. Any Ideas as to why this is happening?