Shake reagent bottle well before using! Do not allow testedwater to contact aquarium or pond water!
1. Rinse the measurement vial several times with the water to be tested, then fill tothe 5 ml mark. Dry the vial on the outside.2. Add reagent drop by drop. Shake vial gently after every drop, until the colorchanges from red via brown to green.3. The number of drops used from the reagent represents the existing total hardness(in °dGH). E.g., 5 drops = 5°dGH.4. Cleaning: Clean the vial thoroughly with tap water before and after eachtest.Close reagent bottle immediately after use. Store at room temperature and away fromlight. Keep locked up and out of the reach of children. For testing ornamentalfish aquariums and pond water only.

US Information for useMost ornamental fish originate from countries where the soil is poor in minerals.However, it is exactly the opposite in many other areas around the world. Rain waterdissolves calcium and magnesium from the soil and consequently creates hard water.With the sera gH-Test, you can quickly determine the exact total hardness. Lookingat the natural conditions helps selecting the optimal fish stock for a communityaquarium, and is a precondition for successful breeding. High total hardness levelscan be lowered by mixing in R/O water. A combination of sera aquatan and serablackwater aquatan or filtering through sera super peat will create soft water, asrequired for most South American fish (e.g. from the Amazon basin).

Shake reagent bottle well before using! Do not allow testedwater to contact aquarium or pond water!
1. Rinse the measurement vial several times with the water to be tested, then fill tothe 5 ml mark. Dry the vial on the outside.2. Add reagent drop by drop. Shake vial gently after every drop, until the colorchanges from red via brown to green.3. The number of drops used from the reagent represents the existing total hardness(in °dGH). E.g., 5 drops = 5°dGH.4. Cleaning: Clean the vial thoroughly with tap water before and after eachtest.Close reagent bottle immediately after use. Store at room temperature and away fromlight. Keep locked up and out of the reach of children. For testing ornamentalfish aquariums and pond water only.

US Information for useMost ornamental fish originate from countries where the soil is poor in minerals.However, it is exactly the opposite in many other areas around the world. Rain waterdissolves calcium and magnesium from the soil and consequently creates hard water.With the sera gH-Test, you can quickly determine the exact total hardness. Lookingat the natural conditions helps selecting the optimal fish stock for a communityaquarium, and is a precondition for successful breeding. High total hardness levelscan be lowered by mixing in R/O water. A combination of sera aquatan and serablackwater aquatan or filtering through sera super peat will create soft water, asrequired for most South American fish (e.g. from the Amazon basin).