Aquarium water testing (drops)

Drop tests are a reliable way to measure water parameters. The drop tests are very simple and the results are immediately visible.

Sera Aqua-Test Box (+Cu)


With this Sera Aqua-Test Box you can easily determine a wide range of water parameters. Direct and reliable results. With this box you can determine nine different water parameters.

Sera Aqua Test Set


Sera test set to easily and quickly determine four different water parameters. This set contains everything to test the pH, kH, gH and NO2.

Sera pH test


Makes it easy to monitor the pH value in fresh and marine water and ponds. For approx. 100 measurements.

Sera gH test


Makes it easy to monitor the total hardness. For approx. 420°dGH.

Sera kH test


Makes it easy to monitor the carbonate hardness in fresh and salt water. For approx. 390°dKH.

Sera No2 test


With the Sera No2 (nitrite) test it is easy to determine the No2 level of your water. Easy to use and instant results. Good for +- 75 tests.

Sera No3 test


The Sera No3 (nitrate) test is to quickly and easily determine the nitrate level in your water. Good for +- 60 tests.

Sera NH4/NH3 test


Ammonium and ammonia mainly arise from fish waste. While ammonium is mostly harmless, ammonia is toxic to fish. Sufficient for approx. 60 measurements.

Sera PO4 test


Both fish waste and feeding are possible causes for phosphate introduction into the water. A part is taken up as a nutrient by plants, an excess, however, provides nutrition for unwanted algae.

Sera O2 test


The sera O2-Test monitors the actual oxygen level in the water within minutes and allows for acting in time up on oxygen deficiency.

Sera Co2 test

€12,95 €6,50

CO2 is one of the most important nutrients for aquarium plants. With the Co2 continuous test of Sera, you can easily and quickly determine the CO2 content of your aquarium water. THT 06-2024

Sera Cl test


A small amount of chlorine in the aquarium water is not harmful, but higher concentrations can quickly lead to the death of shrimps, crayfish and fish. Good for +- 45 tests.

Sera Fe test


The Sera Fe (iron) test is to quickly and easily determine the iron level in your water. Good for +- 75 tests.

Sera Cu test


The Sera Cu (copper) test is to quickly and easily determine the copper level in your water. Good for +- 50 tests.

Sera SiO3 test


Silicate (SiO3) supports the growth of diatoms in marine and freshwater aquariums. The sera silicate-Test allows monitoring the silicate level reliably and easily. Content: 15 ml.