Professional terrariums have high demands on the optimal climate conditions for exotic plants and animals. Frequently special substrates are used, in which the plants grow. An automated irrigation system is controlled by soil moisture measurements. The soil temperature is also important for some plants and controlled by a heater.
The soil moisture sensor SMT100 of TRUEBNER is used in this application, for example in terrariums at the zoo in Stuttgart, Germany. The experts of the company Bambach Tensiotechnik replaced conventional tensiometers to determine the suction pressure in the substrate.