In many areas, chlorine is added to tap water as a disinfectant. Chlorine destroys the filter bacteria and is very corrosive towards the fish’s gills and mucous membranes.
For monitoring chlorine in aquarium water. For approx. 45 measurements. Chlorine is immediately removed by sera toxivec or sera pond toxivec. sera aquatan or sera KOI PROTECT make the water fish friendly.
