Water parameters pH, gH, kH

Estimated reading time: 2 minuten

This page provides information about the acidity (pH), total hardness (gH) and carbonate hardness of aquarium water.

pH value

The pH value is a measure of the acidity of water. The lower the pH value, the more acidic the water. A higher pH value therefore has a lower acidity. The water with a higher pH value is also called basic or alkaline.

The pH value is very important for the shrimp in your aquarium as well as the plants. This is because pH has a lot of influence on other values. If you want to make adjustments to the pH value, this should always be done gradually.

Lower pH

  • A pH-lowering soil;
  • Filter over peat;
  • Add pH-min;
  • Add CO2.

Increase pH

  • Refresh part with basic water (pH higher than aquarium water);
  • Add pH plus.

gH value

The gH value indicates the total hardness of the water. All dissolved substances and minerals together determine the total hardness of the water.

Lower gH

  • Add osmosis water
  • Boil water and let it cool to aquarium temperature before adding it to your tank.

kH value

The kH value is the carbonate hardness of the water. This binds acids together and has a buffering capacity for the water. The KH has a direct influence on the acidity (PH) and the CO2 content (plants).

The kH is a buffer for the pH. This means that the higher the kH, the more it buffers the pH, so that the PH remains (more) stable.

Lower kH

  • Add osmosis water
  • Boil water and let it cool to aquarium temperature before adding it to your tank.

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