Which brand of potassium permanganate fish is good?

Kanghong Kirin Hall. Koi fish Liquid, a brand disinfectant for fish with potassium permanganate from Kanghong Qilintang, has the best sterilization effect, with the price of 1 1.6 yuan, high cost performance and safe ingredients. It is better to use this brand of potassium permanganate fish. Potassium permanganate fish is mainly used for disinfection of water bodies and vivid surfaces of water, prevention and treatment of bacterial diseases, and killing protozoa, worms (such as dactylophora and third generation worms) and parasitic crustaceans that form cysts outside fish bodies.