Grow lights are always used in conjunction with humidity controllers, climate control is the goal of these regulators, in order to create the best growing environment. If you mess up on handling the humidity, there are some major problems that can occur. These things can be anything from overdrying to mould or root rot and will render your entire crop harvestless.
Invest in a good quality humidity controller in order to maintain the best humidity levels. They work by keeping the temperature at a certain level so you can set it and go, not worrying about your plants. With these controllers you set the temperature/humidity values, wait for the calibration steps, and can pair it with a smartphone app. They are fairly simple to use, even if you are not tech-savvy! There are however Bluetooth humidity devices for the more adventurous and they work just as well as the simple devices do.
The typical humidity controller monitors, via a sensor probe, the environment around it. You can set your preferred humidity ranges on the controller’s LCD. Then you will plug in your humidifier or dehumidifiers depending on what it needs. The probe is designed in a sensitive way, it reads the room as the climate changes from the preferred values you have set. This controller then activates whichever device is needed to set the room back in order.
Up to 95% of controllers are the PID type, proportional integral derivative. These are key to finding balance with humidity. During the vegetative stage, humidity must be kept very high, somewhere around 45 to 55%. Whereas during the flowering phase humidity should be lowered in order to prevent pests. Then the best levels to keep it around are 35 to 35% as it is the flowering stage and you want to avert troubles from arising from too much humidity.