The Ultimate Korallen-Zucht and ZEOVit System Buyer's Guide
Korallen-Zucht, founders of the ZEOvit System, are responsible for Germany’s largest coral farm. Through extensive testing and years of proven results on their own coral grow-out systems, KZ has developed a unique line of additives to help hobbyists achieve the same amazing results in terms of coral health and care.
This comprehensive guide introduces the full suite of Korallen-Zucht (KZ) products, categorized by system type, purpose, and reefing application. Whether you run the full ZEOvit system or dose selectively for coloration, nutrients, or problem-solving, this guide outlines when and how to use each additive effectively.
All of the coral and images featured below are real, unedited photos from aquariums using Korallen-Zucht additives.
ZEOvit System
The ZEOvit system is a low-nutrient reefkeeping methodology built on microbial nutrient control and highly targeted supplementation to promote coral health & coloration. It revolves around using ZEOvit zeolite media in a dedicated reactor, bacterial strains (ZEObak), bacterial food (ZEOstart), and periodic bacterial stimulation (ZEOfood). When dosed in conjunction with amino acids and trace elements, ZEOvit tanks achieve exceptional coral coloration, reduced nuisance algae, and crystal-clear water. The maintenance routine typically consists of small frequent water changes and the use of activated carbon to achieve pristine water quality.
Best for: All reef tanks containing coral. Beginners to advanced; anyone chasing intense coloratioin and pristine conditions.
- ZEOvit Media – Regulates biology and nutrient export. 1L per 400L; change every 6–8 weeks.
- Zeostart 3 – Feeds bacteria, reduces nitrate/phosphate. 2ml/1000L daily.
- ZEObak – Bacteria culture for stable biology. 1 drop/100L, 1–2x/week.
- ZEOfood Plus – Stimulates bacterial film & polyp extension. Improves Pink coloration in Stylophora species. 6 drops/100L daily for 1 week/month, then 2 drops 3x/week.
- Sponge Power – Promotes sponge & clam health, improves water clarity. 1 drop/100L every other day.
- Activated Carbon – Removes toxins/yellowing. 0.5L/1000L in flow-through filter, replaced every 2 weeks.
Coral Trace Elements & Nutrition (Extreme Coloration)
Critical trace elements and amino acids to enhance coral color, polyp extension, and metabolic function. Great for hobbyists aiming to boost visual impact, especially in mixed and SPS systems. Benefits can be ahcieved both with and without ZEOvit methodology.
- Coral Booster – Balances elemental deficiencies, enhances blue/pink coloration. 1ml/100L every other day or daily if needed.
- Iron Concentrate – Intensifies greens and overall coloration. 1 drop/100L 2x/week.
- ZEOspur 2 Concentrate – Reduces zooxanthellae for vibrant SPS. 0.5–1ml/100L every 8–10 days.
- ZEOspur Macroelements – Corrects trace deficiencies (e.g. lithium, vanadium). 5ml/100L weekly.
- Stylo-Poccy Glow – Restores natural coloration in Stylophora/Pocillopora. 2 drops/100L as needed, minimum 14-day interval.
- AcroGlow – Revives pale Acropora and increases fluorescence. 0.3ml/1000L, 2–3x/week.
- Pohl’s Xtra & Xtra Special – Broad-spectrum color/vitality for normal or ULNS tanks. 0.5–1ml/100L daily.
- Coral Vitalizer – Improves polyp extension, growth, and color. 1 drop/100L, 3x/week.
- Amino Acid Concentrate & Amino Acid Concentrate LPS – Enhances tissue growth, recovery, polyp expansion. 1 drop/100L (standard); 1ml/200L/day (LPS).
Problem Solvers & Solutions
Designed to combat nuisance algae, cyanobacteria, flatworms, and water clarity issues. Perfect for troubleshooting specific pests or ailments and in many cases aids in recovery.
- Flatworm Stop – Weakens acro eating flatworms. Use in conjunction with Coral Booster to strengthen coral. Helps to reduce, prevent and recover from AEFW events. 1ml/100L daily.
- Coral Snow & Coral Snow Plus – Liquid media to bind toxins immediately and enhance clarity, the Plus version reduces PO4, 1–4ml/100L daily or 1–2x/week (Plus).
- ZEOzym – Enzyme-based waste breakdown and skimmer booster. 1 scoop/1000L weekly.
- CyanoClean – Outcompetes cyanobacteria. 2 drops/100L/day.
- A-Balance – Rapidly assist in reducing cyanobacteria when the cause is an imbalance and a lack of elements. Initial Dosage 50ml/100L. Successive dosage 1ml/100L every 10 days.
- Bio-Mate – Reduces mulm and detritus in sand/rock. 1 drop/100L 2x/week.
- ZEOlife – Removes cloudiness, reduces NO3/PO4. 3ml/100L/day.
- Coral's Love – Aids in the recovery and healing of damaged corals due to bleaching, stress or disease. 1ml/100L 3x/week
Specialty Solutions
Unique or advanced supplements that address specific deficiencies (e.g., potassium, strontium) or target niche goals like coloration, recovery, or water chemistry balance. Suitable for any reef aquarium that contains live coral and invertebrates both with and without ZEOvit.
- B-Balance – Contains vital trace elements that are often removed by the protein skimmer. Enhances red coloration and coral encrusting. 3ml/100L weekly.
- K-Balance Potassium & K-Balance Strong – Maintains potassium, enhances blue coloration. 1ml/100L/day.
- Iodide Complex & Potassium Iodide/Fluoride – Boosts coloration, especially greens/blues. 1 drop/100L every other day.
- Trace Element Complex / Strontium / Magnesium / SeaWater Complex – Essential minerals for long-term growth. 3ml/1000L daily (Trace/Strontium), 3ml/200L (Mg).
- KH Plus Concentrate Liquid - Macro element supplementation to raise or maintain carbonate hardness (alkalinity). Max 0.5 tsp or 1ml/100L/day based on type.
- Automatic Elements – Slow released, low-cost method for releasing Zeovit Additives and elements into your aquarium. 1 drop/50L every 4 months.
- Coral's Love – Aids in the recovery and healing of damaged corals due to bleaching, stress or disease. 1ml/100L 3x/week
- BioPhos 2 – Iron-based phosphate removal. Use passively in mesh bag; change as needed.
- Purest Filter Resin – For silicate and TDS removal post-RO. Replace when TDS >10µS.
- AminoAcid Fish – Fortifies immune system and boosts juvenile survival. Dose onto food 1–2x/week.
- Resistant Fish Concentrate – Bath treatment for fish wounds, parasites. 1 cap per 5L, 20-minute bath.
Coral System 1–4
Coral System provides balanced major and trace elements, seeking long-term growth, coloration, and stability without daily dosing complexity.
- Coral System 1 – Trace elements and biological stimulants. Intensifies yellow & green coloration. Contains Nickel, Manganese, Fluorine, Sodium, Rubidium, Zinc, Vanadium.
- Coral System 2 – Stabilizes key elements and promotes resilience. Intensifies pink, purple & red. Contains Sodium, Boron, Bromine, Strontium, Flourine.
- Coral System 3 – Vital for metabolic function and promotes faster growth. Contains amino acid and organic elements.
- Coral System 4 – Supports pigmentation, skeletal growth and base encrustation. Intensifies blue & green coloration. Contains Potassium, Fluorine, Bromine, Iodine
- 5 Liter Bundle includes all four supplements
Recommended dose: 5ml/100L weekly for each bottle.
Recommended Additive Packages
Nano Power Bundle
The perfect blend for small mixed reef tanks with predominant coral cover. Includes x4 10mL bottles
- Coral Vitalizer
- Pohl’s Xtra
- Amino Acid Concentrate LPS
- Sponge Power
BRS160 Bundle
The exact blend of KZ additives used in the famous BRS160 aquarium and video series.
- LPS Amino
- Amino Acid Concentrate
- Pohl’s Coral Vitalizer
- Sponge Power
- Flatworm Stop
- Pohl's Xtra Concentrate
- Coral Booster
- Coral Vitalizer
Advanced Nano Tank (10–30g)
- Pohl’s Xtra – Vital trace and amino acids for growth & color
- Coral Vitalizer – Boosts polyp extension and color
- K-Balance – Maintains potassium for color stability
- Coral System 1–4 – 5ml/100L per bottle weekly, adjust for nano size
Mixed Reef with LPS
- Coral System 1–4 – Balanced supplement for trace, major, and metabolic support
- B-Balance – Enhances red/pink tones and tissue base
- Amino Acid LPS – Direct feeding support for large-polyp corals
- Coral Snow Plus – Helps maintain water clarity and reduces PO4
SPS-Dominant
- Coral System 1–4 – Core foundation for health and coloration
- ZEOspur 2 – Controlled reduction of zooxanthellae for color pop
- Iron Concentrate – Maintains vibrant green and blue hues
- Acro Glow – Recovery and pigmentation for Acropora
- Coral Booster – Strong elemental support for growth and stress resistance
Frequently Asked Questions
Do I need to use the full ZEOvit system to benefit from Korallen-Zucht additives?
No. While optimal results are achieved when used as a system, many additives (especially for coloration or nutrient control) can be used standalone with excellent success. Always adjust dosage to tank conditions.
How should I start dosing with KZ additives?
Start slowly and observe coral reaction. New tanks or low-nutrient systems should begin with half the recommended dose and ramp up gradually. Monitor water parameters closely.
Can Coral System 1–4 be used independently of ZeoVit?
Yes. Coral System 1–4 is designed for universal compatibility and provides a balanced foundation for coral health, growth, and coloration in any reef setup.
With over 25 years of experience keeping aquariums of all kinds, Robert has a detailed understanding of advanced aquarium techniques and theory. Working as a professional content creator in the saltwater aquarium industry for over 18 years, his perspective, thoughtfulness for the hobbyist, and a general understanding of the hobby, and industry that surrounds it, allows Robert to write and create digestible content that makes reefing fun and easy.
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