You should definitely spend money on a light timer. It’s crucial to provide a plant with a consistent amount of light every day using a timer because the amount of light it receives determines whether it will be in the vegetative or flowering stage. Make sure your timer is functioning properly by checking it at least once a week.

A thermostat, which you can set to a particular temperature and which will cause the fans to turn on when it’s too hot and off when it’s too cold, is preferable to a timer for fans.

If your dehumidifier or air conditioner doesn’t have an internal thermostat, you should get an external one.

Environmental controllers will let growers who have a little extra cash to spend and want complete control over their indoor garden automate the procedure. These tools are necessary if you plan to spend a lot of time away from the garden.

Fans, dehumidifiers, humidifiers, heaters, and air conditioners can all be connected to a controller, and you can set thresholds for when each device turns on and off based on the ideal environmental conditions. Some devices operate independently, making adjustments in accordance with predetermined rules, while others let you manage every component using an app on a phone, tablet, or computer.

How to control the humidity and temperature when growing weed indoors.

When the lights are on, you must keep the temperature between 58 and 70 degrees Fahrenheit and between 70 and 85 degrees Fahrenheit to keep your plants comfortable. While some cannabis strains—typically indicas—prefer the colder end of the temperature range, sativas are typically more tolerant of high temperatures.

At each stage of growth, weed generally favors these temperatures for optimum health:

  • Seedlings/clones: 75-85°F; ~70% relative humidity.
  • Vegetative growth: 70-85°F; 40-60% relative humidity.
  • Flowering: 65-80°F; 40-50% relative humidity.

Temperature and humidity are the two elements you need to regulate to create the ideal environment.

Your cannabis garden will inevitably experience changes in humidity and temperature. These variations can happen both generally in a growing area and in specific areas of a given room. As the environment outside your growing space changes, they can also happen at various times throughout a single day or season.

Because temperature and humidity have an inverse relationship, it can be challenging to achieve the ideal balance. For example, turning up your dehumidifier will decrease the humidity in your growing space while also raising the temperature. Everything is interconnected, so you might then need to turn on an air conditioner.


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