Maintaining a reef aquarium is not just a hobby – it’s a responsibility to create optimal conditions for its inhabitants. One of the key aspects of reefkeeping is ensuring stable water chemistry, which can be achieved through proper supplementation. The Component 1+2+3+ system is a comprehensive solution based on the Balling method, containing essential macro- and microelements necessary for coral growth and vibrant coloration – basically, everything reef tank corals need to thrive. In this article, we’ll dive into the correct dosing of this supplement to promote the healthy development of corals and other marine organisms in your aquarium.

Introduction to the Balling method #
The Balling method is a widely used technique for dosing trace elements aimed at maintaining stable water parameters in a healthy reef aquarium. Developed in the 1990s by Hans Werner Balling, this method involves systematically maintaining key water parameters such as carbonate hardness (KH), calcium (Ca), magnesium (Mg), and trace elements. Stability of these values is achieved through regular, precise dosing of special solutions that continuously replenish the consumed macronutrients.
Component 1+2+3+ is a supplement set based on the Balling method, enhanced with essential elements required for the proper functioning of a marine aquarium. It is worth noting that this product is immediately ready to use. It helps maintain optimal levels of calcium (Ca), magnesium (Mg), alkalinity (KH), and trace elements in reef tanks. Proper magnesium and calcium levels ensure the right balance of microelements, with recommended ranges of Ca: 380-460 ppm and Mg: 1180-1460 ppm.
- Component 1+ contains calcium chloride along with Sr, Ba, Co, Mn, Cu, Fe, Zn, Ni, and Cr.
- Component 2+ consists of sodium bicarbonate enriched with F and I.
- Component 3+ provides magnesium chloride, NaCl-free salt, as well as K and B.
The key difference between the Balling method and traditional two-part dosing systems is the addition of sodium chloride-free salt (AF Reef Mineral Salt), which maintains ionic balance, mimicking natural seawater conditions.

Why should all three components be dosed equally? #
In the natural marine environment, the chemical composition of the water is exceptionally stable, with the proportions of macro- and microelements such as calcium, magnesium, potassium, and sulfates remaining nearly constant. This stability is ensured by the vast volume of ocean waters, their circulation, and natural biological processes that maintain chemical balance.
However, a reef aquarium is a closed system, lacking these natural self-regulating mechanisms. The responsibility for maintaining stable water parameters rests with the aquarist, who must carefully manage their balance.
When calcium from Component 1+ combines with carbonate from Component 2+, calcium carbonate forms – the primary building block of corals. This reaction also produces sodium chloride, and an excess of it can disrupt water chemistry. Component 3+ provides NaCl-free salt to maintain ionic balance.
Dosing all three components equally ensures the proper ionic balance and meets the needs of corals. If the ratio is not maintained, ionic imbalances can occur, leading to instability in water parameters.
For a moderately stocked SPS reef tank, the recommended dose is approximately 25 ml per 100 liters (26 gallons) of water daily. To maintain stable parameters, it is best to divide this dose into as many small portions as possible.
How to start dosing component 1+2+3+ to your tank #
- Step 1: Discontinue previous supplementation
Before starting to use Component 1+2+3+, discontinue all other calcium, magnesium, and carbonate hardness supplements. Water changes should also be paused during the period of water testing to determine element consumption.
- Step 2: Determine daily element consumption
The simplest method is to test the water for Ca, KH, and Mg levels immediately before starting and again after 24 hours without any dosing. The difference between the results will show how much of these elements are consumed daily.
Keep in mind, however, that the established dose is not a fixed value forever. Corals grow, their skeletal mass increases, and their metabolism rises. When you add new coral species, the demand for Ca, KH, and Mg grows with them. Therefore, doses set at the beginning should be regularly reviewed based on water test results.
If your aquarium has a high demand for these elements, be aware that suddenly stopping dosing can cause a rapid drop in parameters. In such cases, reduce doses gradually to maintain environmental stability.
- Step 3: Begin dosing
Distribute dosing into as many small portions as possible throughout the day. Many reefers using automated KH monitors observe that corals consume more KH during daylight hours when illuminated, so continuous micro-dosing throughout the day is ideal.
How to prepare solutions for your reef aquarium #
Component 1+2+3+ is a convenient solution, as each container is a ready-to-use dosing solution. However, if you prefer to prepare the solutions yourself using the Component Strong, here is the recipe:
Component-1 Recipe:
- 1 liter RO/DI water
- 50 g Calcium – agent for maintaining constant calcium levels and pH regulation in reef aquariums.
- 5 ml Strong A supplement
- 5 ml Strong B supplement
Component–2 Recipe:
- 1 liter RO/DI water
- 80 g KH Buffer – A preparation that stabilizes KH levels.
- 5 ml Strong C supplement
Component-3 Recipe:
- 1 liter RO/DI water
- 10 g Magnesium – magnesium stabilizing agent.
- 25 g Reef Mineral Salt (necessary for proper stabilization of parameters in the aquarium).
- 5 ml Strong K supplement
You can also check our video guide: here.
Frequently Asked Questions (not only about the dosage) #
What if one parameter rises faster than others?
If calcium increases faster than magnesium, do not alter the equal dosing ratio of Component 1+2+3+. Instead, use powdered or liquid additives like Ca Plus, Mg Plus, or KH Plus to restore balance.
What’s the difference between KH buffer and KH plus?
KH Buffer is a powder that must be dissolved, while KH Plus is a ready-to-use liquid solution.
Can I increase solution concentration?
Yes, you can create more concentrated calcium and magnesium solutions, up to 2-3 times stronger. However, excessive concentration can clog dosing pumps. KH Buffer is a saturated solution, so its concentration cannot be increased.
Importance of testing and parameter monitoring
Regular testing of calcium, alkalinity, and magnesium levels is essential when using Component 1+2+3+. Weekly testing is recommended, and for large reef tanks, even more frequent testing may be necessary.
For the most accurate results, an ICP test from Aquaforest’s laboratory can provide a detailed breakdown of your water chemistry, helping you fine-tune the dosing.
Automating supplementation
To ensure precise and consistent dosing, consider investing in automated dosing pumps. These allow for controlled micro-dosing throughout the day, preventing parameter fluctuations and maintaining water stability.
Water changes and supplementation
Aquaforest recommends weekly 5-10% water changes. During water changes, it’s beneficial to test Ca, KH, Mg, and K levels and adjust them accordingly. In newly established aquariums, microelements from Component Strong may not be necessary, but they become beneficial in mature reef tanks populated with corals.
Conclusion #
Component 1+2+3+ offers an easy and effective way to maintain stable reef aquarium parameters. Proper dosing ensures optimal coral growth and health, while automated dosing pumps and regular water testing help prevent fluctuations and instability.