Dosage:

10 ml per 100 liters of saltwater increases the sulfur content by +7 mg/l and the magnesium content by +5 mg/l.

Shake well before use.

Maximum daily dosage:

20 mg sulfur per liter

Storage:

Store in a cool, dry place, protected from light.

Additive S:

Doktorfisch Additive Sulfur was developed for the targeted increase of sulfur content (sulfate) in saltwater aquariums. Sulfur is required for skeleton formation and is involved in metabolic processes. A balanced sulfur level also promotes the activity of zooxanthellae, which significantly contribute to the energy supply and coloration of corals. The targeted addition of sulfur supports the ecological balance in the reef system and strengthens the vitality and color intensity of corals.

Dosage:

10 ml per 100 liters of saltwater increases the sulfur content by +7 mg/l and the magnesium content by +5 mg/l.

Shake well before use.

🌊 Doktorfisch: Your Brand for High-Quality Saltwater and Reef Aquarium Products

Doktorfisch stands for quality, precision, and passion in saltwater aquaristics. We develop great additives and care products specifically designed to stabilize water parameters, promote coral growth, and sustainably support the natural balance in saltwater 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 Saltwater Aquaristics

We want to help you turn your aquariums into a true oasis 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 are guided by current scientific findings in marine biology and chemistry. We naturally ensure that your water values remain stable and your reef grows healthily in the long term.

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

With Doktorfisch, you choose products that help you build a saltwater 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 saltwater system – Doktorfisch provides the right support.