Wunder Formalin 50ml
Wunder Formalin 50ml


Wunder Formalin 5%

Wunder Formalin 5% – Treatment to control external parasitic infections.

Formalin is a generic term which describes a solution of 37% formaldehyde gas dissolved in water

Formalin is used as a bath treatment to control external parasitic infections of fish. It is extremely effective against most protozoans, as well as some of the larger parasites such as monogenetic trematodes. Formalin effectively kills parasites on gills, skin, and fins. It is not the preferred treatment for external bacterial or fungal infections. In addition, high concentrations of formalin are used to control fungi on fish eggs. Formalin is not effective against internal infections of any type.

Dose on day 1 and 3, Repeat if necessary. Provide good aeration during treatment, monitor fish for signs of stress and add freshwater if required. 3ml per 20L