Alice B
Fish Herder
I definitely have used a UV sterilizer for parasite control on a Regal Tang - they will spot out over and over again with ich, 6 months in a tank with UV and regular water changes and he quit spotting out. I do not know how effective it would be on an internal bacterial infection. How is TB spread from fish to fish? suspended in water so via gills, or waste consumed by other fish (as Enteric septicemia is spread), or some other factor?