
Best selling Aquarium care from Sera
On this page you'll find a ranking of the best Sera products in this category. To give you a quick overview, we've already ranked the most important information about the products for you.
1. Sera Water test calcium (Ca), 2 x 15 ml
This test monitors the calcium level easily and precisely in steps of 20 mg/l (ppm) for approximately 7,500 mg (ppm) calcium. Add sera marin component 1 Ca in case of too low calcium levels. A partial water change will help in case of too high levels.

2. Sera Aqua-Test Box Marin (Ca)
Water Testing for Advanced Users
The experienced marine aquarist regularly checks the water in their aquarium. This is the only way to address issues before they become a threat to the sensitive animals.
The sera aqua-test box marine includes the following tests:
- pH value
- Carbonate hardness
- Ammonium/Ammonia
- Nitrite
- Nitrate
- Phosphate
- Copper
- Calcium.

3. Sera aqua-test set
Only those who know their water parameters can react promptly and counteract irregularities to protect animals and plants.
With the Aquatest Set, you can determine the important parameters for freshwater and saltwater:
- pH value
- Carbonate hardness (KH)
- Total hardness (GH)
- Nitrite (NO2)
A detailed instruction manual is included for each test.

4. Sera Aquatan Bio-Protection 5l
Aquarium maintenance is made easier, and the fish visibly feel more comfortable in the water. They become more vibrant and colorful. The species-appropriate formula barely alters the pH level, preventing the fish from developing gill bleeding.

5. Sera Florena Iron Base Fertiliser
25 ml are sufficient for 100 liters of water.
50 ml are sufficient for 200 liters of water.
250 ml are sufficient for 1000 liters of water.
500 ml are sufficient for 2000 liters of water.

6. Sera Nitrivec Bacteria 500ml
Application: Before using Sera Nitrivec, treat the water with Sera Aquatan, as the bacteria in Sera Nitrivec are affected by chlorine and other disinfectants in the water.

7. Sera bio nitrivec
Bio Nitrivec breaks down ammonium and nitrite through the contained cleaning bacteria.
The included mineral volcanic rock removes pollutants, effectively binds turbidity, and provides a habitat for the cleaning bacteria. The volcanic rock contains calcium, potassium, and magnesium, essential minerals that are constantly consumed in the aquarium.
For healthy, clear, and biologically active water.

8. Sera 10 ml total earthrate test
Sera GH test is a long-term GH test. Only regular control of the carbon dioxide content ensures optimal conditions for all aquatic plants and fish.

9. Sera florena liquid complete fertiliser
Aquatic plants remove pollutants and algae nutrients from the water. They therefore play a central role in an aquarium.
florena supplies aquatic plants with all important minerals and trace elements for healthy and colourful growth. Special stabilisers ensure that the nutrients, especially iron, are available to the plants over a long period of time. florena is nitrate and phosphate-free.
The combination of florena and florenette A is perfectly matched and meets all the needs of the different aquatic plant species. In aquariums with low fish stocking and many plants, we recommend the combination with flore NPKdrops.
Range: 5000 ml for 20000 litres of aquarium water.

10. Sera Flssig filter medium bio nitrivec 2500 ml
Bio Nitrivec, a product of biotechnology, breaks down ammonium and nitrite through the cleaning bacteria it contains.
The included mineral volcanic rock removes pollutants, effectively binds turbidity, and provides a habitat for the cleaning bacteria. The volcanic rock is enriched with calcium, potassium, and magnesium, essential minerals that are constantly consumed in the aquarium.
For healthy, clear, and biologically active water.
