Dosage:

1 ml per 100 liters of seawater increases the nitrate level by +1 mg/l.

Shake well before use.

Maximum daily dosage:

2 mg nitrate per liter

Storage:

Store in a cool, dry place away from light.

Additive N:

Doktorfisch Additive Nitrogen is a highly concentrated nitrogen solution designed to individually balance nitrogen deficiencies. If the nitrate and phosphate levels in an aquarium become unbalanced, this not only leads to increased algae growth but also often affects corals. They stop growing, their colors fade, and in the worst case, the tissue dissolves. Our Additive N is characterized by its high purity.

Dosage:

1 ml per 100 liters of seawater increases the nitrate level by +1 mg/l.

Shake well before use.

🌊 Doktorfisch: Your Brand for High-Quality Marine and Reef Aquatics Products

Doktorfisch stands for quality, precision, and passion in marine aquaristics. We develop great additives and care products specially designed to stabilize water parameters, promote coral growth, and sustainably support the natural balance in marine aquariums. When you choose Doktorfisch, you can rely on a brand that combines scientific know-how, many years of practical experience, and the highest purity. This ensures a healthy, colorful, and stable reef.

🧪 Our Mission in Marine Aquaristics

We want to help you make your aquariums a true feel-good place for fish, corals, and microorganisms. Whether you are looking for a reef aquarium with corals, water additives, or specialized mineral salts for surgeonfish – you will find everything your heart desires with us. We develop all our products according to strict quality standards and base them on current scientific findings from marine biology and chemistry. We naturally ensure that your water values remain stable and your reef grows healthy in the long term.

🔍 Doktorfisch: The Brand for Effective Reef Care & Stable Water Chemistry

With Doktorfisch, you choose products that help you build a marine aquarium that runs stably and shines in full beauty. Our solutions do just that. They strengthen the biology of the reef, reduce unwanted fluctuations, and create an environment in which corals can unleash their full potential. Whether you operate a nano reef, an SPS-dominant aquarium, or a large-volume marine system – Doktorfisch provides the right support.