Tetra Test 6 in 1 - 25 strips

Water test to check the six most important water values in one step

Measures the pH, general and carbonate hardness (GH + KH), nitrite (NO₂^-), nitrate (NO₃^-), and chlorine (Cl₂)

Full information and tips on possible countermeasures can be found in the instructions for use

Tip: with the Tetra Aquatics app you can determine water values quickly, reliably and easily using your smartphone