Sera Nh 4 / Nh 3 -Test (Ammonium – Ammonia Test Fish Aquarium

Makes it easy to monitor the pH value in fresh and marine water and ponds. For approx. 100 measurements. In case of too low pH values we recommend sera KH/pH-plus (in freshwater aquariums) or sera pond bio balance (in ponds), in case of too high values in freshwater aquariums we recommend sera pH/KH-minus or filtering through sera super peat.