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Silicate (SiO3) supports the growth of diatoms in marine and freshwater aquariums. The sera silicate-Test allows monitoring the silicate level reliably and easily.
13,98 € * More information
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.
14,38 € * More information
Makes it easy to monitor the pH value in fresh and marine water and ponds. For approx. 100 measurements.
10,58 € * More information
The sera O2-Test monitors the actual oxygen level in the water within minutes and allows for acting in time. Sufficient for approx. 60 measurements.
14,28 € * More information
Nitrite (NO2) is among the most toxic substances for fish in aquariums. It can enrich in the water in case of insufficient biological filtration. Sufficient for approx. 75 measurements.
12,58 € * More information
Nitrate (NO3) is an indicator for severe organic pollution. Sufficient for approx. 60 measurements.
13,88 € * More information
Makes it easy to monitor the ammonium/ammonia level in fresh and marine water
13,69 € * More information
Makes it easy to monitor the carbonate hardness in fresh and salt water. For approx. 390°dKH.
10,58 € * More information
Iron (Fe) is an important component of plant nutrition. In case the plants have fading leaves this may be due to lacking iron.
14,28 € * More information
For approx. 420°dGH.
10,58 € * More information