Dosage:

10 ml per 100 liters of seawater increases the potassium level by 10 mg/l.

Shake well before use.

Maximum daily dosage:

50 mg potassium per liter

Storage:

Store in a cool, dry place away from light.

Additive K:

Doktorfisch Additive Potassium - this highly concentrated potassium solution is designed for marine aquariums and serves to specifically compensate for potassium deficiencies. Stable potassium levels promote the health and color intensity of the animals. Even a 5% decrease can significantly impair the growth and coloration of corals.

Dosage:

10 ml per 100 liters of seawater increases the potassium level by 10 mg/l.

Shake well before use.

🌊 Doktorfisch: Your brand for high-quality marine and reef aquarium products

Doktorfisch stands for quality, precision, and passion in marine aquaristics. We develop great additives and care products specifically 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 expertise, 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 parameters 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 where corals can unfold their full potential. Whether you operate a nano reef, an SPS-dominant aquarium, or a large-volume marine system – Doktorfisch provides the right support.