HR-15 Humidifer Complete Kit AnalogueThis HR50 Humidifier comes with a analog humidistat and 100L flexi tank and connection fittings. Why Is Humidity Important Leaves lose water through evaporation through their stomata small openings in special cells on the leaf surface where gaseous exchange takes place. If the relative Humidity is too low, a plant will start to give up some of its water into the surrounding air which will result in the plant drying out and wilting. The HR 15