Contrary to air humidifiers, sprinkler systems have a delayed effect on humidity. As in nature after a rain shower, the humidity in the terrarium increases after use, which means that it can not be controlled directly. Irrigation systems are accordingly best used in a time-controlled manner in order to simulate a natural climate. This not only increases the humidity but also supplies the animals with drinking water. Irrigation systems also play an important role in the supply of liquid to the plants, especially in rainforest terrariums.