Symptoms of bacterial infections include: reddened wounds, ulcers, missing scales, eroded fins and/or mouth. White, sugar grain-sized spots covering the body indicate marine white spot (Cryptocaryon), while finer white spots are likely marine velvet (Oodinium). External parasites may also show scratching behaviour.
Anti-Bacterial contains powerful ingredients to kill bacteria. When used in conjunction with Marine Paratonical it is the best way of eradicating protozoan parasites in a reef aquarium where invertebrates are present.