Eight tips to keep your grow room warm this winter (2024)

It's that time of year when the central heating is certainly on and our big jackets are now out!

Depending on your grow room location - the drop in temperature can be a serious problem during lights on and when are lights out and when lights are on.

Here's some other things to try to improve your hydroponics grow room or grow tents temperature:

  • Utilize fan speed controllers to reduce the amount of air intake and extraction
  • Add extra heating such as an oil heater or electric fan heater
  • Insulate your grow room floor, wall and ceiling
  • Use a water heater for large volumes of nutrient solution
  • Monitor maximum and minimum temperature & humidity readings
  • Obtain your intake air from a different room - but not from outside
  • Ensure your nutrients are stored at the correct temperature
  • Run your grow lights during the night and lights off during the day

Implementing the above in your hydroponic grow room enviroment will help you to avoid low growing temperatures - which will have a detrimental effect on your plants. Not only will photosynthesis be reduced but also plant stems may go purple, growth will slow down and nutrient uptake will reduce. This means your yield at harvest will be reduced - and after all your months of hard work that's the last thing you want!

We are open for click and collect and stock everything and more required to keep your growing enviroment at the correct tempartures - throughout the seasons including the Lighthouse Wireless Thermostat , AirComfort Wireless Temperature Humidity Sensor and much more....

Eight tips to keep your grow room warm this winter (2024)

FAQs

How to make a grow room warmer? ›

Below are some helpful tips.
  1. Consider ventilating your grow tent from a lung room: a crawlspace, attic or other room in your home that does not get as cold as the outside environment.
  2. Dim your intake/exhaust fans with a fan speed controller. ...
  3. De-glass your hoods. ...
  4. Create an air diffuser. ...
  5. Add more light.

How to cool a grow room in winter? ›

Air Circulation and Ventilation

Promoting air circulation is crucial for cooling a grow room. Use oscillating fans to improve air movement, preventing stagnant pockets of warm air and promoting heat dissipation.

What temperature should my grow room be when the lights are off? ›

Temperatures with lights on: 64-75 F° (lights off: minus 9-18 F°)

How to cool down a grow tent without AC? ›

Increase air movement: use an oscillating fan to move the air inside your grow tent especially the air between the grow light and plants. A good ventilation system will help circulate the cold input air in the grow tent and also elevate the hot air to be vented out of the grow tent.

How to keep a grow room warm when the lights are off? ›

Insulating Your Grow Room

Insulation is key to retaining heat within your grow room preventing cold air from entering and warm air from escaping. Start by identifying any areas where air may leak in or out, such as windows, doors, or ventilation systems. Seal these gaps using weatherstripping or caulking.

How hot is too hot for a grow room? ›

If you are growing marijuana in a grow room, keep in mind, the maximum temperature for marijuana grow tent success is 85°F. Temperatures higher than this will result in the plant's death.

How do I control the humidity and temperature in my grow room? ›

Use A Grow Tent Dehumidifier To Decrease Moisture

While you may think of dehumidifiers as a more commercial intervention for humidity, there are actually dehu's specifically geared towards hobby growers. Many of these also offer air conditioning, helping you manage grow tent heat simultaneously!

What kind of heater should I use in a grow room? ›

Gas heaters generate heat by burning natural gas or propane, offering a powerful and cost-effective heating solution for large spaces. These heaters are typically more energy-efficient than electric heaters, making them suitable for extensive grow operations where heating costs can quickly accumulate.

Is it bad to leave a grow light on 24 7? ›

A: In general, you should not leave grow lights on 24/7. Plants need a light-dark cycle to develop properly. It's believed that they truly do “rest” during periods of darkness, and probably use this time to move nutrients into their extremities while taking a break from growing.

Is it OK to leave grow lights on 24 hours? ›

' plants do require a daily respiration period of at least 6 hours per day (for seedlings) and ideally 8-10 hours for more mature plants. Therefore we do not recommend providing more than 14-16 hours per day of light, even if you are growing long-day-loving varieties and trying to induce flowering/fruit from them.

How do you heat a grow tent in the winter? ›

Ensuring HID lamps are positioned to distribute heat evenly across the tent should help maintain temperatures and increase heat production in your grow tent. Increasing the amount of time your lights are on will also increase heat production.

What can I use to keep my tent cool? ›

How to Keep a Tent Cool
  • Choose a Breathable Tent with Mesh – Lots of It!
  • Seek Out a Shaded Campsite.
  • Use a Sunshade or Tarp.
  • Remove the Rainfly for Cross-Breeze Ventilation.
  • Get a Portable Fan.
  • Swap Out the Sleeping Bags for Sheets.
  • Extra Tips to Keep You Cool.
Jan 31, 2021

Can a tent be air conditioned? ›

Air Conditioned Party Tent Sizes and Estimated A/C Needs

On average, tented events need one ton of air conditioning for every 100 square feet. If it is going to be around 100 degrees, and there will be a lot of people in the tent, then plan on 75 square feet per ton.

What humidity should my grow room be when lights are off? ›

Late Flowering Stage
StageTemperatureHumidity
Flowering StageDay temperature (lights on): 65-84°F. Night temperature (lights off): 60-75°F35-45%
Late Flowering StageDay temperature (lights on): 64-75°F Night temperature (lights off): 60-68°F30-40%
2 more rows
Jul 20, 2023

When should I turn off my grow lights? ›

A good general rule of thumb to remember, if your plant is flowering or a vegetable it needs 12 to 16 hours of light in a day and 8 hours of darkness to rest. Yes, Plants need more UV light than these lamps can provide during the day.

Is 80 degrees too hot for a grow room? ›

Cannabis is a tricky plant to grow indoors, and there is an ideal temperature range that all growers should know. The perfect temperature range varies based on the plant subspecies, but for the most part, 66ºF is ideal for root growth, and a range between 70ºF and 80ºF is best for aerial growth.

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