These infrared thermometers are perfect for checking your leaf temperatures if you want to work out the VPD your plants are experiencing. Simply aim the laser at the leaves (or any other surface) and pull the trigger.
Essential item for succesfully growing with LED lights - When using LED lights your leaves will be running a lot cooler than if you were running HPS lighting due to the lack of radiated from the LEDs. Indeed you often have to run your room a few degrees hotter than you would with HPS to achieve the desired leaf temperature of 25-27 degrees celsius for optimum growth and yields. Keep an eye on your leaf temperatures regularly and adjust the air temperature in yoor room with a heater or with ventilation control to achieve the temperature required.
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