Tetra Water Test Set will help you understand the importance of water quality. By having the correct parameters and good water quality, it will help your fish and plants live longer and healthier lives.

Highly accurate, the Tetra Water Test contains liquid kits which work by changing the colour of a water sample in relation to the concentration of a given substance.

You simply need to compare the colour of the sample to the easy-to-read colour charts or count the number of drops it takes to alter the colour of the sample.

In addition to the test reagents, the set contains four cuvettes, colour cards and a dosing syringe.

The instructions for use contain a lot of valuable information, advice, and recommendations about aquarium water.

Always read the instructions carefully before use. If levels are unsatisfactory then you should seek advice as to the underlying cause.

Permanent Hardness (pH):

• The pH describes one of the most important chemical properties of your water, the balance between acid and alkaline.
• All fish, plants, and micro-organisms react very sensitively to drastic and rapid changes to the pH value.
• A pH value of between 6.5 and 8.5 is ideal for nearly all freshwater fish.

Carbonate Hardness (kH):

• Important in the stabilisation of the pH value. Ideally, your aquarium should be between 3-10 °dKH.
• kH represents the hydrogen carbonate concentration, which acts as a pH-buffer.
• A stable buffer capacity will be achieved by kH values higher than 6 °dH.
• If the kH level in your aquarium is too low, add Tetra pH/kH Plus. This increases the hydrogen carbonate concentration and buffers the pH value in the long term.
• If the kH level in your pond is too low, add Tetra Pond WaterStabiliser. This allows you to achieve sufficient buffer capacity in your pond water. This is also an optimal condition for effective and safe algae control.

General Hardness (gH):

• The general hardness (gH) is determined by the concentration of various ions in the water, such as calcium and magnesium.
• It has a direct influence on the vital functions of fish, plants, and micro-organisms.
• The general hardness value for most ornamental fish is between 6 and 16°dH.

Nitrite (NO₂):

• The nitrite level should be as low as possible, less than 0.3mg/l is ok, higher than 0.3mg/l is harmful.
• If the nitrite level is too high, carry out partial water changes (30% each) until the nitrite content is no more than 0.3mg/l. To help this, remove any debris such as fish food or plant remains, and add some Tetra Filter Active.

Carbon Dioxide (CO₂):

• Carbon Dioxide (CO₂) is a vital nutrient for healthy plant growth.
• After measuring the pH and kH values, the CO₂ content of the water can be read off from the CO₂ calculation table.
• The CO₂ concentration should be around 15 mg/l, which is quite sufficient for all aquatic plants. A CO₂ concentration exceeding 30 mg/l may be harmful to your fish in the long term.

Suitable for use in:

• Tropical aquariums.
• Cold water aquariums.
• Ponds.

Not suitable for use in marine aquariums.

Useful tip:

• With the Tetra Aquatics App you can determine water values very quickly, safely and easily using your smartphone.