For the quick and safe removal of harmful substances such as chlorine, chloramines, and ammonia in freshwater and marine aquariums. Sera Chlor•Ex improves tap water to be fish-friendly and healthy for aquarium water. Fish can be added after 24 hours when combined with Sera Filter Biostart (freshwater) or Sera Marin Bio Reefclear (marine water).

Sera Chlor•Ex does not affect the pH value.