CO₂ system

Irrespective of the time of year, the water level and the lighting conditions, tropical waters, especially flowing waters, are surprisingly stable. Factors such as pH value, the degree of hardness and the CO₂ content,
and the degree of hardness, fluctuate only insignificantly. A protected water stability in the aquarium is ensured by using the Dupla CO₂ System:

1. constant pH value
In the ideal mixed aquarium with ornamental fish from geographically and chemically different waters, it is advisable to choose a neutral setting of pH
7. Even in special aquaria where particular species of fish such as discus fish are kept or bred, the CO₂ System has great advantages. Due to the precise CO₂ dosage, both acidic and alcaline pH ranges can be programmed and kept stable.

2. stable carbonate hardness
In an aquarium suffering from a lack of CO₂ the plants use up carbon. During this process, known as biogenous decalcification, the carbonate hardness is reduced to dangerously low levels and the pH value becomes highly unstable. A sufficient level of CO₂ prevents a biogenous decalcification and ensures the stability of the water.

3. optimal supply of CO₂ for aquarium plants
Submersed water plants usually meet their carbon need by way of the gaseous carbon dioxide dissolved in the water. The Dupla CO₂ fertilizer ensures an optimal supply of carbon.