Immediate help against nitrite During the start-up phase of a new aquarium, after a drug treatment or a filter change, there is a danger of nitrite build-up ("nitrite peak"), as there are too few filter bacteria to break down the toxic nitrite to the plant nutrient nitrate. Even a nitrite value of 1.0 mg/l can be harmful for the fish. sera Nitrit-minus performs quickly in case of acute...

Due to its high proportion of humic substances, Tetra AlguMin biologically prevents the formation of unsightly algae. AlguMin thus makes a positive contribution to maintaining the biological balance and promotes healthy plant growth. - Use for initial algae problems - Versatile against all common types of algae - With humic substances as natural anti-algae active...

Water preparation that immediately transforms aggressive tap water into safe and fish-friendly aquarium water, with BioExtract for healthy, clear water. For fresh and marine water aquariums.

'To increase carbonate hardness and pH value, e.g. in Cichlid tanks and in all other species that require a pH value between 7.5 and 8.5 and a water hardness of 10 - 15° dH. Carbonate hardness and pH can be precisely adjusted to planned and recommended values to compensate for KH loss in marine aquariums, and for kH loss that often occurs in densely populated basins. For acute treatment when...

Filter material for removing silica acids (silicate) that lead to the formation of diatoms. Rinse, put in the filter pouch (included) and place in the filter. Rinse out after one to two weeks Diatoms can cause unsightly brown deposits on gravel, decorations and plants The JBL silicate test allows you to check the silicate content. Effectiveness: values below 0.4 mg/l silicate prevent diatoms...

Stability and safety Stabilizes and secures the pH value Works against biogenic decalcification Creates species-appropriate conditions (e.g. for African cichlids) The carbonate hardness (KH) is one of the most important water values in the aquarium. A large proportion of the fish species kept in a freshwater aquarium prefer relatively hard water. In addition, the KH acts as a buffer, preventing...

Soft water - but safe Lowers the pH and KH Adjusts the carbonate hardness Regulates the pH value For species-appropriate soft and slightly acidic water Some fish species (e.g. discus and scalar) are adapted to very soft water and this condition is particularly required for reproduction. However, even when keeping other fish species the water may have too high carbonate hardness (KH) or the pH...

Functions: ACTION: Bacteria and enzymes that, through rapid synergistic action, naturally engage in food competition with algae and pathogenic bacteria, purify the water and remove their precious nutrients BENEFITS: It rapidly absorbs the nutrients available in the water, effectively reducing the unpleasant proliferation of algae. It brightens the water, increasing the light to the benefit of...

Colombo Aqua Start 250 ml The Aqua start makes tap water suitable as aquarium water to start the aquarium with. Toxins and heavy materials are removed from the water and the water becomes clear. Vitamins are added to strengthen fish's mucus shell and reduce the risk of diseases. Colombo Bacto Start 250 ml The Bacto Start is rich in live bacteria, improving the functioning of the aquarium...

Additional carbon for optimal growth Systematic care Alternative carbon source For aquarium plants For photosynthesis, plants need carbon, but it is often present in insufficient quantities in the water. A lack of carbon is one of the biggest limiting factors for the growth of aquatic plants. The new systematic plant care product sera flore 1 carbo was developed to provide plants with the...

Liquid plant care for splendid aquatic plants Basic care With minerals and trace elements UV stable For aquarium plants sera florena is the ideal plant care for all aquatic plants, which absorb their nutrients mainly via the leaves. Aquatic plants play a central role in the aquarium, as they withdraw pollutants and algae nutrients from the water. As to ensure that the aquatic plants can fulfill...

For fish- and plant-friendly aquarium water: For new furnishings, water changes and to strengthen after fish diseases. Suitable for freshwater aquariums and aquatic turtles. Binds harmful substances from tap water: Neutralization of copper, lead and zinc as well as chloramines Healthy water, healthy fish: Protection of mucous membrane, gills, skin and fins through aloe vera. Stress protection...