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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.
12,78 € *
For approx. 420°dGH.
10,67 € *
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.
14,58 € *
Zuverlässige und genaue Messungen des pH-Wertes in Süßwasser. Hohe Reichweite und gute Langzeitstabilität.
10,28 € *
Zur exaxten und zuverlässigen Bestimmung des Kohlendioxidwertes in allen Süßwasseraquarien. Hohe Reichweite und gute Langzeitstabilität.
12,69 € *
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.
14,48 € *
For fast, easy determination of the CO2 content in aquariums. Result in just a few seconds. Easy to use. A color reaction indicates the CO2 content.
8,58 € *
Potassium: at least as important as iron in a planted aquarium! Potassium is a macronutrient and at least as important as iron for a good and healthy plant growth in a fresh water aquarium.
14,68 € *
Silicate (SiO3) supports the growth of diatoms in marine and freshwater aquariums. The sera silicate-Test allows monitoring the silicate level reliably and easily.
14,08 € *
The very sensitive and accurate Easy-Life Phosphate testkit is suitable for fresh water and marine aquariums.
12,98 € *