 | Tetra Test 6 in 1 checks the 6 most important water equivalents in only one step: total and carbon hardness (GH & KH), nitrite (NO2), nitrate (NO3), Chloride (CL2) and the pH value in the fresh water. Packing contains 25 test stripes for 25 tests.
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 | Tetra Test pH to the reliable and exact determination of the pH value within the range of pH 5 - 9. The pH value describes one of the most important chemical properties of your aquarium water: the balance between acids and bases. All fish, plants and micro-organisms react very sensitively to drastic and rapid changes to the pH value.
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 | Tetra Test KH to the reliable and exact determination of the KH value (carbonate hardness) in fresh and sea water aquaria. Content test solution: 10 ml.
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 | Tetra Test GH to the reliable and exact determination of the GH value (total hardness) in fresh and sea water aquaria. Content test solution: 10 ml.
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 | Tetra Test NO2 to the reliable and exact determination of the nitrite content in fresh and sea water aquaria. Organic nitrogenous substances in the aquarium, such as fish excreta and food remains, are decomposed in stages: first into toxic ammonia, then into nitrite and finally into nitrate (nitrogen cycle). A nitrite content (NO2) of over 0.3 mg/l will cause your fish long-term harm.
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 | Tetra Test NO3 to the reliable and exact determination of the nitrate content in fresh and sea water aquaria. Packing contents are sufficient for 45 tests.
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 | Tetra Test CO2 measures the carbon dioxide value reliably and precisely. Just like fish, plants also breathe by absorbing oxygen (O2) and emitting carbon dioxide (CO2). Under the influence of light, however, plants can carry out a process, which is known as photosynthesis.
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 | Tetra Test Fe to the reliable and exact determination of the iron content in fresh water aquaria.
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 | Tetra Test O² to the reliable and exact determination of the oxygen content in fresh and sea water aquaria. Packing contents are sufficient for 30 tests.
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 | Tetra WaterTest set for the reliable and precise determination of five decisive water values.
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