Essential gases for plants should include oxygen for respiration, CO2 for photosynthesis, and water vapor (humidity). Plants tend to do well when humidities are about 50-80%. Higher humidities can result in a lot of condensation and possible fungal/mildew growth, while lower humidities will increase transpiration and stress the plants. plants.
A means of recylcing the condensed humidity will plants.
A means of recylcing the condensed humidity will be important to conserve water.