How Long to Keep Fans on in Grow Room?

How Long to Keep Fans on in Grow Room?

There is no specific time that is set to keep the fans on in Grow Room. In any case, there are basic factors that will decide the time. 

In this article, we will be discussing the factors that will decide the time you need to keep your fans on in a Grow room. 

In any case, before we do that, let us understand why we need a Grow tent fan.

Why Do You Need a Fan in a Grow Room? 

In the environment, air flows naturally, and it is essential for plant growth. At the point when you choose to put your Grow tent inside, you also need to equip your plants with similar conditions as in nature. 

The wind is a fundamental necessity for the plants that grow in nature. It supplies the wind that is required by your plants. 

Coming up next are a couple of reasons why you need a fan inside your grow tent.

To Keep Plants Breathing 

Plants inhale carbon dioxide and the leaves grow by the process of photosynthesis. Furthermore, the cycle is nonstop at the two evenings and days. 

In ideal growing conditions, plants consume the carbon dioxide encompassing their leaves every 20 or 30 minutes. Thus, you need to keep the wind stream going to allow the plants to breathe. Furthermore, fans are your knight in shining armor.

Keeping The Temperature Comfortable 

Fans keep the air flowing, and that helps in regulating the temperature. The absence of proper air exchange through fans will build the temperature within, and that would be surprisingly more dangerous because of the heat emitted from the lights(even when they are off). 

Keep up with the Correct Humidity Level 

Humidity word written on wet window with condensate. High level of dampness in apartment.

A lot of humidity welcomes unforeseen pathogens to take hold. Also, what’s the most incessant reason behind such an ascent in humidity? 

An improper wind stream, you got it right! 

Fans are indeed, the tool you have to depend on to monitor humidity level.

To Keep The Odor Under Control 

Another auxiliary yet significant thing fans (specially debilitates) do is monitor the scent. In case you have been growing for a long while, you may be very much aware of its significance. 

Oscillating or Inline Fans – Which Ones We Are Talking About? 

Fans are of two kinds in any grow room-inline fans for removing/supplying air, and oscillating fans to keep air dissemination on. However long we are looking at keeping fans on/off, we need to define which one of them you are managing as of now. 

Inline/Extractor Fans 

They are accountable for bringing/removing air from or to the growing space. Another significant job they play is to monitor the temperature. Also, for the most part, relies upon the presence of lights. 

Thus, the light/dim pattern of the plants plays an imperative part to choose when to keep inline fans on and when to stop them. 

Oscillating Fans 

These do the work of moving the air around the grow room. Regardless of whether inline fans are on or off, it is important to prevent the carbon dioxide or humidity buildup around the leaves, and that is the reason oscillating fans are in. 

In this way, oscillating fans are probably going to be running for extra hours as compared to inline fans. In most cases, they run for around 24 hours a day.

Case 1: Based On Light/Dark Hours 

How Long to Keep Fans On When Lights Are On? 

It delivers a great amount of heat and humidity while the lights are on in your grow room. So fans need to be circulating at their level best, at all times. 

Inline Fans 

However long the light system is on, you need to keep each inline air trade system working that is the basic rule. 

The air trade demand is dependent on the heat and humidity delivered still up in the air through a CFM calculator. Nonetheless, you should custom the fan speeds dependent on that. 

Oscillating Fans 

Same as the inline fans, keep them moving all through the whole light schedule. It is ideal to adhere them to their greatest speed in the event that it does not become an issue to the plants.

How Long to Keep Fans On When The Lights Are Off? 

However long the lights are off, the heat buildup will be terminated. Despite the fact that there will be radiant heat meandering around, however, that will reduce sooner or later. 

Inline Fans 

Soon after 15 to 20 minutes after the lights are off, you can reduce the speed of the inline fans using a speed regulator. After a couple of hours(while the temperature and humidity are present) of doing as such, you can run them on/off at a regular frequency.

For example, you can continue to use them for the initial 15 minutes of every hour, and keep them off for the rest of the time. Moreover, carry on with the cycle until the next light schedule. 

Oscillating Fans 

At the point when lights are not anymore on plants, no more heat is generated. Also, the photosynthesis cycle enjoys some time off. Be that as it may, nonetheless, plants keep breathing and leaving vapors around the leaves. 

Thus, oscillating fans actually should be working. In any case, you can decrease the speed by a couple of degrees with the default speed regulator they come with. Also, keep them moving like that till the next light schedule.

Case 2: Based On The Stage Your Plants Are In 

How Long to Run Fan on Seedlings Stage 

For growers guaranteeing proper ventilation is an unquestionable requirement from the initial growing stage itself. Furthermore, everything begins from the seedling stage. 

New seedlings are very prone to illnesses sourced from damping-off air. Along these lines, you need to make sure decent airflow around them every minute of every day. 

You might plan the exhaust fans dependent on the temperature and humidity, however, the oscillating stand-up or tower fans ought to always be turned on. Accordingly, it can keep the soil from being dry, and keep a gentle breeze moving around the seedlings.

How Long to Run Fan on Flowering Stage 

Flowering is the main stage of the entire growing process, especially for cannabis growers. 

As usual, both exhaust and oscillating fans need to be running during the daytime. In any case, with regards to dark hours, you need to do some quick calculations. 

On the off chance that you have 2 to 3 oscillating fans, one intake fan, and one exhaust fan, keep the oscillating fans on for the whole dark period. Furthermore, turn different fans off the following one hour after the light goes off. Furthermore, turn them on again after 30 minutes before you turn the lights again. 

Notwithstanding, when your plants are in the late flowering stage, they may smell with odor, and make the entire space stink. Along these lines, the best way is to run scrubber fans all day every day is to do it at the late blossoming stage.

Case 3: Based On Night/Day 

Would it be advisable for you to Keep Fans On or Off at Night? 

This is one question we saw growers ask a lot of times.

Indeed, the appropriate response is-it relies upon how cool it is out in the evening. To be more explicit, colder evenings would transform plants into a problematic circumstance on the off chance that you keep the fans during the evening. In case it is a summer night, you might have to set a timetable to occasionally turn the fans on and off. 

The best solution is to set a clock to turn off the fans for half of the dark cycle. It will help in keeping a balance of the whole thing. 

A Few Other Things to Keep Eye On 

All through the whole article, we have made this whole note on how long to leave the fan on plants. However, there is no guideline for this situation. It relies upon a couple of different factors, like: 

How Powerful The Fan Is? 

You can not run simply any random fan for all day, every day since it looks cool. An excess of vivacious air buildup might blow up and initiate branch breakage or stem.

Is The Carbon Dioxide Scrubber Stopped For An Extended Period Of Time?

Carbon Dioxide filters do play a very important part that is vital for plants. In fact, when air intake/extraction is stopped, carbon dioxide also stops working. At times it might bring in an inconvenient situation when you keep the extract fans off for a couple of hours. 

Some Extra Points To Remember:

  • Involve the fan that gives the specific wind stream you need. 
  • Use a fan regulator to set the speed of the fans as you need. 
  • Never keep the fans off for a couple of hours in a go.

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