Why You Need Proper Grow Tent Ventilation

You’ve just purchased your first LED grow light and grow tent, and you’re ready to plant your seeds. But before you begin there are some critical things to consider like do you have the best grow tent ventilation? In this article, I’ll discuss why ventilation is essential to your grow tent setup and a few useful tools to help you achieve it.

Why You Need Grow Tent Ventilation

When it comes to growing plants indoors, there are many missing elements. Sun is one of the most critical factors plants need to thrive but is sorely missing indoors and in many urban garden settings. This is why grow lights, and a grow tent with the ability to reflect these lights are essential in the growth and survival of an indoor plant. The combination of LED lights and a Mylar internal lining is instrumental as a replacement for sunshine, but it also has its cons.

The main problem is the heat the LED light produces and the buildup of heat within a small enclosed area. This causes a lot of issues within the tent, which leads to the need for proper grow tent ventilation.

Another reason why ventilation is a must for grow tents is to reduce the growth of mold; this happens when conditions inside the tent become too moist and humid; no grower ever wants to see mold contaminating their plants. By ensuring your grow tent is ventilated correctly, you will be able to avoid these common problems easily.

Grow tent equipment to help with ventilation

Now that we’ve established grow tents need proper ventilation, it’s time to look into the different tools and equipment you can add to help control the temperature and humidity within the tent.

Take note, these are just suggestions and not must-haves, so if you are confident enough in your skills as a grower, you can always just rely on your gut feeling instead of these tools. Nevertheless, here are some great grow tent ventilation aids to look into.

Extractor Fans

These types of fans are convenient to have inside your grow tent because they pull out the hot air inside the tent and pump new cool air inside. Keep in mind extractor fans are a little pricey, but they are a good investment when it comes to keeping your grow tent well ventilated.

A tip to consider: For big tent like the Ohuhu 48”x48”x80” Mylar Hydroponic Plant Growing Tent, get at least a 6” extractor fan to achieve the best results. Adding an extractor fan to your grow tent will make a significant difference in maintaining the temperature and humidity inside the tent.

Oscillating Fans

Another type of fan that is beneficial to the ventilation of a grow tent is the oscillating fan. These are cheaper than extractor fans, and they keep the air within the grow tent moving and fresh.


It goes without saying that a thermometer is a handy piece of equipment to have, especially when you want to be sure about the temperature within the grow tent at all times. With the help of a thermometer, you can adjust the lights and fans to achieve the desired temperature for your plants to thrive.

Carbon Dioxide Injections

It’s no secret that plants need CO2 to grow and thrive, which is why having the right amount of CO2 inside a grow tent is also important. By taking this extra step, you will increase your harvest and ensure your plants stay healthy.


There’s no better way to ensure the humidity inside your grow tent is perfect for your plants to survive than using a dehumidifier.

If you have the extra room inside your tent, adding a humidifier will be a significant investment. Take note, not all humidifiers are the same, and it will take some extra research to find the one best suited to provide the best grow tent ventilation for your setup.

Set Up Your Grow Tent for Success

Grow tents are the best tools for indoor and urban gardening, but just having the tent without a proper setup will end in disaster.

When it comes to growing plants indoors, preparation and planning are essential; do not rush into planting your seeds and seedlings without knowing the basics of caring for them because you might just end up being disappointed and spending more money than you should.

Even if you can’t afford to equip your grow tent with all the ventilation accessories mentioned above, at least look into oscillating fans as the bare minimum.

Keep your plants healthy in a well-maintained tent, and you’ll be reaping a bountiful harvest soon enough.