Stabilisateur de dureté de l'eau - Moerings GH Plus - 1L

When rain accumulates season after season, it gradually depletes the water of minerals and causes the pond's hardness to drop below the acceptable level. Below 8 dH, aquatic plants struggle to absorb CO2, fish lose their natural resistance to disease, and algae find fertile ground to proliferate. Moerings GH Plus corrects this imbalance in a controlled manner, without causing chemical shock to your pond.

What really happens when your pond's GH drops too low

The GH value, expressed in degrees dH, measures the concentration of calcium and magnesium dissolved in the water. These two minerals are essential for the pond's biological balance: calcium contributes to the strength of scales and shells, and magnesium is crucial for the photosynthesis of aquatic plants. When rainwater, naturally low in minerals, gradually replaces the pond water, these concentrations drop.

The phenomenon is inevitable and intensifies after prolonged periods of rain. A GH value below 8 dH disrupts CO2 transport, slows plant growth, and weakens fish defenses. The ideal range for a biologically stable pond is between 8 dH and 12 dH. How Moerings GH Plus works on water hardness: The formula is based on 94-97% calcium chloride powder, a highly soluble form that dissolves quickly in pond water without leaving any residue. The increase in GH is gradual, preventing osmotic shock to fish and plants. The product is completely biodegradable and safe for both humans and the environment. It does not interfere with existing biological filters and can be used with other water treatment products, provided that the pH and KH are adjusted simultaneously, as these three parameters…