Tetra Test 7in1
Tetra Test 7in1 enables you to quickly and reliably determine the seven most important water values in your aquarium in three simple steps. Evaluate the level of pH, carbonate hardness (KH), general hardness (GH), nitrite (NO2-), nitrate (NO3-), chlorine (Cl2) and carbon dioxide (CO2).
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Detail
Water test to check the seven most important water values in one step
Measures the pH, general and carbonate hardness (GH + KH), nitrite (NO2-), nitrate (NO3-), chlorine (Cl2) and carbon dioxide (CO2)
Track water values regularly as an early warning system for poor water quality
Full information and tips on possible countermeasures can be found in the instructions for use
More information
Tetra Test 7in1 enables you to quickly and reliably determine the seven most important water values in your aquarium in three simple steps: dip a test strip into the water, swirl it for about two seconds and tap off any excess water. Read off the most important information about the water values only one minute later. The colour chart on the packaging of the test strips can be used to evaluate whether the water parameters are within the safe range to maintain a biological balance for fish, plants and microorganisms in your aquarium. You can find the exact limit values and possible countermeasures in the enclosed instructions. To guarantee the function of the test strips do not touch the test fields or hold them under flowing water. As the latest addition, you can now also determine the carbon dioxide (CO2) level in the aquarium water with the Tetra Test 7in1. CO2 is especially required for your aquatic plants to thrive. Furthermore the pH level, general and carbonate hardness (GH + KH), nitrite (NO2-), nitrate (NO3-) as well as chlorine (Cl2) in the aquarium water are measured. Aquarium inhabitants react very sensitively to excessive changes in the pH value, which impacts their well-being. The general hardness affects the vital functions of fish, while the carbonate hardness has a direct influence on the stability of the pH value (pH buffer). To influence the pH and KH values in your aquarium Tetra, recommends Tetra pH/KH plus or Tetra pH/KH Minus, depending on the specific environmental needs of your fish. The Tetra Test 7in1 also measures the nitrite and nitrate values of the aquarium water. Nitrite is extremely harmful for ornamental fish and other aquatic creatures in your aquarium, even in very low concentrations, and should not be detectable in the water. Nitrate is a nutrient that helps plants to grow. However, excessively high levels of NO3- can be harmful to fish and promote excessive algae growth. Chlorine may also be present in the water as it is often contained in tap water. Just like nitrite, chlorine should not be detectable in the aquarium water and always be treated with Tetra AquaSafe.
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FAQs
Which countermeasures does Tetra recommend, if the water values are not ideal?
Notice: The exact limits for each water value are described in the detailed instructions enclosed in Tetra Test 7in1.
Chlorine (Cl2) and Nitrite (NO2-): These two water values are very harmful to the life in your aquarium and should not be detectable. If the Tetra Test 7in1 indicates the presence of those poisonous substances, it is recommended to use Tetra AquaSafe to neutralise chlorine. To reduce nitrite, perform a partial water change on a regular base and be sure that your filter system is working correctly. Additionally, apply Tetra SafeStart to restore a safe environment in your aquarium.
pH and KH: To influence the pH and KH values in your aquarium, Tetra offers two options.
Tetra pH/KH Minus -  this water care liquid is a reliable solution for safely reducing carbonate hardness (KH) in your aquarium. By lowering the KH, the pH value also decreases automatically, creating optimal water parameters for certain fish species.
Tetra pH/KH Plus is your go-to solution for achieving a precise and controlled increase in carbonate hardness (KH) in your aquarium to improve living conditions for certain species of fish. This product not only buffers the pH value but also prevents acid levels from dropping too low, which is crucial for the health of your fish
Which water values can I determine with the Tetra Test 7in1 and why are they important?
Notice: The exact limits for each water value are described in the detailed instructions enclosed in Tetra Test 7in1.
NEW: Carbon Dioxide (CO2): A healthy level of carbon dioxide of 5 – 15 ml/L in your aquarium is especially required to generate good plant growth. The plants, in turn, produce dioxide (O2) which is essential for your aquarium inhabitants. In interaction these two values – CO2 and O2 – are necessary to maintain the biological balance.
Chlorine (Cl2): Chlorine is often contained in tap water and will have a negative impact on the health of all your aquarium inhabitants, even in low concentration. As it can cause burns to the gills and mucous membranes, Tetra recommends determining this water value, especially after adding tap water to your aquarium.
pH: The pH value describes how acidic (below 7 pH) or basic (above 7 pH) the aquarium water is, and therefore the habitat of your ornamental fish. It is one of the most important values to determine and manage in your aquarium, on a regular basis. Fish, invertebrates and plants react very sensitive to strong and sudden changes in the pH value, which impacts their well-being. In extreme cases a sudden change can cost the life of your fish within a very short time.
General hardness (GH) and carbonate hardness (KH): The general hardness affects the vital functions of your fish, while the carbonate hardness has a direct influence on the stability of the pH value. The KH works as a pH buffer. A stable KH value minimises the risk of a sudden drop of acidity and therefore protects your fish.
Nitrite (NO2-): Nitrite is a product of the biodegradation of fish feces, leftover food and other organic waste. Just like chlorine, even a low level of nitrite in your aquarium water can be extremely harmful to fish as it brings the level of oxygen (O2) in the water out of balance. A typical reaction of high nitrite concentrations are
Tetra Test 7in1 enables you to quickly and reliably determine the seven most important water values in aquariums in three simple steps:
Dip a test strip into the water Move it two to three times and tap off any excess water.
Read off the most important information about the water values only one minute later.
The colour chart on the tin of the test strips can be used to evaluate whether the water parameters are within the safe range. You can find the exact limit values in the enclosed instructions. To guarantee the function of the test strips, do not touch the test fields or hold them under flowing water.
Why is it so important to monitor the water values in your aquarium?
The water values you can test with the Tetra Test 7in1 work as an early warning system to initiate countermeasures before poor water quality can affect your aquarium’s inhabitants. The entire ecosystem, including ornamental fish, plants and microorganisms, reacts very sensitive to changes in water quality. A variety of factors can disrupt the biological balance, e.g. lighting conditions, components of tap water, residues of food, excretion of fish, and so on. So, even when your aquarium looks fine on the surface, it is worth testing the water values weekly to maintain a healthy and stable environment for all inhabitants, in the long run.
Tetra Test 7in1
Tetra Test 7in1 enables you to quickly and reliably determine the seven most important water values in your aquarium in three simple steps. Evaluate the level of pH, carbonate hardness (KH), general hardness (GH), nitrite (NO2-), nitrate (NO3-), chlorine (Cl2) and carbon dioxide (CO2).
Select a size to show online shops
50 strips
10 strips
Buy Online
Detail
Water test to check the seven most important water values in one step
Measures the pH, general and carbonate hardness (GH + KH), nitrite (NO2-), nitrate (NO3-), chlorine (Cl2) and carbon dioxide (CO2)
Track water values regularly as an early warning system for poor water quality
Full information and tips on possible countermeasures can be found in the instructions for use
More information
Tetra Test 7in1 enables you to quickly and reliably determine the seven most important water values in your aquarium in three simple steps: dip a test strip into the water, swirl it for about two seconds and tap off any excess water. Read off the most important information about the water values only one minute later. The colour chart on the packaging of the test strips can be used to evaluate whether the water parameters are within the safe range to maintain a biological balance for fish, plants and microorganisms in your aquarium. You can find the exact limit values and possible countermeasures in the enclosed instructions. To guarantee the function of the test strips do not touch the test fields or hold them under flowing water. As the latest addition, you can now also determine the carbon dioxide (CO2) level in the aquarium water with the Tetra Test 7in1. CO2 is especially required for your aquatic plants to thrive. Furthermore the pH level, general and carbonate hardness (GH + KH), nitrite (NO2-), nitrate (NO3-) as well as chlorine (Cl2) in the aquarium water are measured. Aquarium inhabitants react very sensitively to excessive changes in the pH value, which impacts their well-being. The general hardness affects the vital functions of fish, while the carbonate hardness has a direct influence on the stability of the pH value (pH buffer). To influence the pH and KH values in your aquarium Tetra, recommends Tetra pH/KH plus or Tetra pH/KH Minus, depending on the specific environmental needs of your fish. The Tetra Test 7in1 also measures the nitrite and nitrate values of the aquarium water. Nitrite is extremely harmful for ornamental fish and other aquatic creatures in your aquarium, even in very low concentrations, and should not be detectable in the water. Nitrate is a nutrient that helps plants to grow. However, excessively high levels of NO3- can be harmful to fish and promote excessive algae growth. Chlorine may also be present in the water as it is often contained in tap water. Just like nitrite, chlorine should not be detectable in the aquarium water and always be treated with Tetra AquaSafe.
Read more
FAQs
Which countermeasures does Tetra recommend, if the water values are not ideal?
Notice: The exact limits for each water value are described in the detailed instructions enclosed in Tetra Test 7in1.
Chlorine (Cl2) and Nitrite (NO2-): These two water values are very harmful to the life in your aquarium and should not be detectable. If the Tetra Test 7in1 indicates the presence of those poisonous substances, it is recommended to use Tetra AquaSafe to neutralise chlorine. To reduce nitrite, perform a partial water change on a regular base and be sure that your filter system is working correctly. Additionally, apply Tetra SafeStart to restore a safe environment in your aquarium.
pH and KH: To influence the pH and KH values in your aquarium, Tetra offers two options.
Tetra pH/KH Minus -  this water care liquid is a reliable solution for safely reducing carbonate hardness (KH) in your aquarium. By lowering the KH, the pH value also decreases automatically, creating optimal water parameters for certain fish species.
Tetra pH/KH Plus is your go-to solution for achieving a precise and controlled increase in carbonate hardness (KH) in your aquarium to improve living conditions for certain species of fish. This product not only buffers the pH value but also prevents acid levels from dropping too low, which is crucial for the health of your fish
Which water values can I determine with the Tetra Test 7in1 and why are they important?
Notice: The exact limits for each water value are described in the detailed instructions enclosed in Tetra Test 7in1.
NEW: Carbon Dioxide (CO2): A healthy level of carbon dioxide of 5 – 15 ml/L in your aquarium is especially required to generate good plant growth. The plants, in turn, produce dioxide (O2) which is essential for your aquarium inhabitants. In interaction these two values – CO2 and O2 – are necessary to maintain the biological balance.
Chlorine (Cl2): Chlorine is often contained in tap water and will have a negative impact on the health of all your aquarium inhabitants, even in low concentration. As it can cause burns to the gills and mucous membranes, Tetra recommends determining this water value, especially after adding tap water to your aquarium.
pH: The pH value describes how acidic (below 7 pH) or basic (above 7 pH) the aquarium water is, and therefore the habitat of your ornamental fish. It is one of the most important values to determine and manage in your aquarium, on a regular basis. Fish, invertebrates and plants react very sensitive to strong and sudden changes in the pH value, which impacts their well-being. In extreme cases a sudden change can cost the life of your fish within a very short time.
General hardness (GH) and carbonate hardness (KH): The general hardness affects the vital functions of your fish, while the carbonate hardness has a direct influence on the stability of the pH value. The KH works as a pH buffer. A stable KH value minimises the risk of a sudden drop of acidity and therefore protects your fish.
Nitrite (NO2-): Nitrite is a product of the biodegradation of fish feces, leftover food and other organic waste. Just like chlorine, even a low level of nitrite in your aquarium water can be extremely harmful to fish as it brings the level of oxygen (O2) in the water out of balance. A typical reaction of high nitrite concentrations are
How do I use Tetra Test 7in1?
Tetra Test 7in1 enables you to quickly and reliably determine the seven most important water values in aquariums in three simple steps:
Dip a test strip into the water Move it two to three times and tap off any excess water.
Read off the most important information about the water values only one minute later.
The colour chart on the tin of the test strips can be used to evaluate whether the water parameters are within the safe range. You can find the exact limit values in the enclosed instructions. To guarantee the function of the test strips, do not touch the test fields or hold them under flowing water.
Why is it so important to monitor the water values in your aquarium?
The water values you can test with the Tetra Test 7in1 work as an early warning system to initiate countermeasures before poor water quality can affect your aquarium’s inhabitants. The entire ecosystem, including ornamental fish, plants and microorganisms, reacts very sensitive to changes in water quality. A variety of factors can disrupt the biological balance, e.g. lighting conditions, components of tap water, residues of food, excretion of fish, and so on. So, even when your aquarium looks fine on the surface, it is worth testing the water values weekly to maintain a healthy and stable environment for all inhabitants, in the long run.
Do you have a question about the product?
Do you have a question about the product?
Do you have a question?
Your inquiry has been sent.