How can I cool down my indoor grow tent? 2020 Updated
It is clear to see when summer months are just around the corner, especially when you work in a grow shop. Suddenly as early as March you can get a surge of customers coming in and inquiring about ways to cool down their grow rooms. In fact some indoor growers opt to stop growing altogether during the hot summer months.
The majority of growers that face heating problems in early spring, tend to have usually just assembled a grow room without having carefully planned or measured their room or their apparatus correctly. Others may just need tweaking or an addition of some extra equipment specifically designed for grow room heat reduction.
How to Cool A Grow Tent?
Beating the heat is a dilemma most indoor growers face but surprisingly this problem can be solved by a couple of ways the most effective of which would be discussed below;
Air Conditioning
Air conditioning is particularly important because there isn’t anything that combats heat during the hot period as much as an air conditioner so keeping an air conditioner can help to combat the heat from nature as well as heat that builds up from lights, pumps and other electronics. Before you purchase an air-conditioner for your grow tents for weed, be sure to consider the size of your grow room and seasonal outdoor temperature as this would affect the air conditioners efficacy.
Monitor and Control Humidity
Low relative humidity increases the impact of heat on plants. Plants use transpiration, exhaling water vapor through their leaves, to help stay cool in hot weather. If their efforts aren’t strong enough, they become stressed, and important functions like photosynthesis slow down or stop.
Increasing the relative humidity creates an environment where plants feel the heat less. You can mist your growroom a few times a day, or invest in a humidifier. A good rule of thumb is to keep the humidity above 40% for mature, flowering and fruiting plants, and a bit higher—above 60%—for young plants and greens.
Use An Air Fan
The first thing that you can do to help decrease the temperature in a grow room without an air condition system is to use a simple air fan.
Now, an air fan will help move air around, and the simple movement of air should help the air cool down in of itself. The movement of air does lead to cooling.
No, an air fan won’t do the trick on its own, especially if the grow tent is way too hot, but it is a good start indeed. What you need to pay attention to here is that you get a fan that is energy efficient and runs cool.
If you have a fan in your grow tent that runs hot and uses a lot of electricity, then it might actually do the opposite of what you are planning, or in other words, it can actually heat things up, so be careful with this.
AIR-COOLED HID Lights
Old school HPS and MH lamps emit a great deal of heat as well as light. Curb that excess heat and keep on growing year-round by air-cooling those HPS grow lights.
All that’s required is an additional fan and some ducting attached to an air-cool reflector to suck out that heat from the grow tent.
Best Indoor Grow Tent Reviews:
Apollo Horticulture Indoor Grow Tent

There are plenty of reasons why Apollo Horticulture made it to top of our list. First, Apollo is one of the best-known brands when it comes to hydroponics. The tents by Apollo are known for their durable and high-quality material that is accompanied by best LED grow lights, and other accessories like inline fans, bubble hash bags, heating mats, and air pumps.
The Apollo Horticulture 48”x48”x80” makes perfect sense for you if you are looking for a higher yield of marijuana and have space to place this tent. The tent uses light absorbing black outer layer and a highly reflective inner layer with the tearproof and heatproof material.
The tent is also designed with multiple entry points with different size openings to make sure limited heat and light escape when you want to have a look inside. It also comes with circular holes at the top to install inline fan ventilation system with ease.
In addition, the tent is very easy to construct and takes just a few minutes, supported by strong metal poles and a heavy-duty frame. For seamless ventilation, the tent also uses mesh panels at the bottom.
Vivosun Grow Tent

While Vivosun is a relatively new player in the grow tent market…
They quickly established themselves as another ‘value for money’ grow tent brand.
Build quality-wise this tent is a little bit better than the Apollo grow tent.
But since Apollo Horticulture has a slightly better reputation and a longer track record…it's rated somewhat better.
Here's the deal though:
This grow tent is quite a bit cheaper than the premium brands like Secret Jardin and Gorilla, while offering close to the same quality and conveniences:
Conclusion and Final Words:
These are the best grow tents for cannabis. You have several options for every size, and each one of them is a high-quality choice which will bring your weed the perfect environment it needs to grow and develop. Each one of them has the necessary features to accomplish so.
The majority of growers that face heating problems in early spring, tend to have usually just assembled a grow room without having carefully planned or measured their room or their apparatus correctly. Others may just need tweaking or an addition of some extra equipment specifically designed for grow room heat reduction.
How to Cool A Grow Tent?
Beating the heat is a dilemma most indoor growers face but surprisingly this problem can be solved by a couple of ways the most effective of which would be discussed below;
Air Conditioning
Air conditioning is particularly important because there isn’t anything that combats heat during the hot period as much as an air conditioner so keeping an air conditioner can help to combat the heat from nature as well as heat that builds up from lights, pumps and other electronics. Before you purchase an air-conditioner for your grow tents for weed, be sure to consider the size of your grow room and seasonal outdoor temperature as this would affect the air conditioners efficacy.
Monitor and Control Humidity
Low relative humidity increases the impact of heat on plants. Plants use transpiration, exhaling water vapor through their leaves, to help stay cool in hot weather. If their efforts aren’t strong enough, they become stressed, and important functions like photosynthesis slow down or stop.
Increasing the relative humidity creates an environment where plants feel the heat less. You can mist your growroom a few times a day, or invest in a humidifier. A good rule of thumb is to keep the humidity above 40% for mature, flowering and fruiting plants, and a bit higher—above 60%—for young plants and greens.
Use An Air Fan
The first thing that you can do to help decrease the temperature in a grow room without an air condition system is to use a simple air fan.
Now, an air fan will help move air around, and the simple movement of air should help the air cool down in of itself. The movement of air does lead to cooling.
No, an air fan won’t do the trick on its own, especially if the grow tent is way too hot, but it is a good start indeed. What you need to pay attention to here is that you get a fan that is energy efficient and runs cool.
If you have a fan in your grow tent that runs hot and uses a lot of electricity, then it might actually do the opposite of what you are planning, or in other words, it can actually heat things up, so be careful with this.
AIR-COOLED HID Lights
Old school HPS and MH lamps emit a great deal of heat as well as light. Curb that excess heat and keep on growing year-round by air-cooling those HPS grow lights.
All that’s required is an additional fan and some ducting attached to an air-cool reflector to suck out that heat from the grow tent.
Best Indoor Grow Tent Reviews:
Apollo Horticulture Indoor Grow Tent

There are plenty of reasons why Apollo Horticulture made it to top of our list. First, Apollo is one of the best-known brands when it comes to hydroponics. The tents by Apollo are known for their durable and high-quality material that is accompanied by best LED grow lights, and other accessories like inline fans, bubble hash bags, heating mats, and air pumps.
The Apollo Horticulture 48”x48”x80” makes perfect sense for you if you are looking for a higher yield of marijuana and have space to place this tent. The tent uses light absorbing black outer layer and a highly reflective inner layer with the tearproof and heatproof material.
The tent is also designed with multiple entry points with different size openings to make sure limited heat and light escape when you want to have a look inside. It also comes with circular holes at the top to install inline fan ventilation system with ease.
In addition, the tent is very easy to construct and takes just a few minutes, supported by strong metal poles and a heavy-duty frame. For seamless ventilation, the tent also uses mesh panels at the bottom.
Vivosun Grow Tent

While Vivosun is a relatively new player in the grow tent market…
They quickly established themselves as another ‘value for money’ grow tent brand.
Build quality-wise this tent is a little bit better than the Apollo grow tent.
But since Apollo Horticulture has a slightly better reputation and a longer track record…it's rated somewhat better.
Here's the deal though:
This grow tent is quite a bit cheaper than the premium brands like Secret Jardin and Gorilla, while offering close to the same quality and conveniences:
- A heavy-duty zipper that won’t break easily;
- Reliability and durability with its sturdy metal frame, metal corners, and thick canvas
- An easy way to check up on your plants through the easy-view-window
Conclusion and Final Words:
These are the best grow tents for cannabis. You have several options for every size, and each one of them is a high-quality choice which will bring your weed the perfect environment it needs to grow and develop. Each one of them has the necessary features to accomplish so.
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