Each Esha Quicktest strip simultaneously checks 6 critical water parameters:

1. pH (Acidity): The pH value, which shows whether the water is acidic, neutral, or alkaline.

2. KH (Carbonate Hardness): The stability of the pH. A proper KH value prevents sudden and dangerous pH fluctuations.

3. GH (General Hardness): The concentration of dissolved minerals, such as calcium and magnesium, in the water.

4. NO₂ (Nitrite): The concentration of nitrites, which are highly toxic and dangerous for fish.

5. NO₃ (Nitrate): The concentration of nitrates, which at high levels can cause stress to fish and promote algae growth.

6. Cl₂ (Chlorine): The presence of chlorine, which is toxic to aquatic organisms and should be absent from aquarium water.

The process is very simple: dip a strip into the aquarium water for one second, shake it lightly, and wait about 60 seconds. Then, compare the colors that appear on the squares of the strip with the color chart on the packaging to read the values.

In summary, the Esha Quicktest is an essential tool for every aquarium owner, as it provides a quick, economical, and comprehensive overview of water quality, allowing timely corrective actions to be taken.