We have a great selection of effective anti-bacterial medications to control ulcers, fin rot, bacterial gill disease and other infections in koi, goldfish and aquarium fish. We carry Tricide-Neo, Melafix, Romet TC - top coating for food, Bio-Bandage, Wipeout and more.

Visit our How to Treat Ulcers in Koi and Goldfish for more information on bacterial ulcer disease and how best to treat it.