Sadly a UV won't do much for brown jelly disease. In fact, I would argue that it would do anything. A UV may kill bacteria suspended in the water column, but even this is determined by flow rate and other factors. If bacteria has infected your coral tissues, that's where it's at and a UV can do nothing about it. If slime from your infected acan were to slough off, get sucked into the uv and passed through, there is a chance it would kill some bacteria but that's a long shot. Bi-weekly water changes won't do anything either. Again, they may remove some bacteria in the water column but will also stress corals due to water chemistry fluctuations. Again, the only way to have any effect is by fragging off dying pieces of corals and dipping the colony. Like I said before, keeping the colony isolated can help contain spreading. Dips alone are of marginal value, and much better at aiding a fragged coral in healing and remaining bacteria free, than being a cure for a bad infection. If over 90% of the coral is compromised, I would consider discarding the specimen so it doesn't infect others. You can sometimes get one or two polyp frags off infected colonies which will eventually grow into small colonies.
if all of my acans die, I will probably be out of the hobby to be honest.
