How to use a humidifier to increase the growth conditions of plants?

How to use a humidifier to increase the growth conditions of plants?

Grow tents have become sort of a must-have feature among today's gardeners. A grow tent is a space allocated for growing plants.

It is usually enclosed by a reflective material that increases the penetration of light. But more importantly, a grow tent helps in retaining the moisture that the plants use.

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Which Is the best Humidifier for Grow Tents

When dealing with Grow Tents, the best humidifier is the Kesnos 70 pint dehumidifiers

However, this will depend on several things, like if you want it to do several tasks – like Dorm Room, or Cold and Flu symptoms.

There will also be costs for the humidifier - like Mist Type, Water Tank Capacity, Coverage Area and Noise Level. So as you can see, there is a lot in picking the right humidifier!

Depending on your requirements, these constructions usually come in different sizes and shapes. There is a lot of content on how you can best optimize the performance of these grow tents, but one factor is often overlooked; a humidifier.

A humidifier is crucial to the development of your plants because these devices help in adding or retaining the moisture in the air, preventing the plants from drying up.

However, choosing the right humidifier for you is not as easy as it sounds. There are a ton of humidifiers out there, and choosing one that suits you can be a daunting task. Luckily, we have compiled a list of different humidifiers and their features to help you get the best one.

But first, let's understand the role humidity plays in the growth and health of your plants.

Why Is Humidity Important for a Grow Tent?

Humidity means the amount of moisture in the air. The moisture of an area varies depending on the temperature. This is not automatically controlled in the grow tents.

When the plants' moisture content is higher than the surroundings, then it will lose more water. Therefore, you will require a humidifier to regulate. Plants need proper humidity to sustain their growth.

The right levels of humidity will foster photosynthesis, transpiration, and gas exchange. When there is too much humidity, a plant may not function properly to sustain itself. You have to maintain the right amount of moisture to foster exponential growth.

Here are some humidity levels you should know to ensure maximum growth for your plants:

10-35 percent

This is the lowest level of humidity. In this level, the plants can barely survive, given the strenuous efforts to perfume normal functions.

35-60 percent

Depending on the type of plants you want to grow, this level is optimum. Some plants may not survive this level, but most plants will survive.

55- 80 percent

This level is a bit challenging to maintain in a grow tent. However, it is optimum for most plants and will lead to fast and healthy growth.

80-90 percent

This is the best level for tropical plants. If you are growing a palm tree, be sure that it will blossom very well in this humidity level. Do not set this level if you are growing other plants.

You can easily tell if the humidity level that you have set on your humidifier if it is appropriate for your plants. If the humidity is too low, you should expect the leaves to change the color or to be dry. You may also spot some bacteria on the plants. The growth of the pant is entirely curtailed.

When the humidity is a bit too high, the plants will obtain a grey mold. The nutrients of the plants are hindered from production, and the roots get diseased.

Why Do You Need the Humidifier for Grow Tent?

In a grow tent, it is paramount that you maintain the temperature, moisture, and air at an optimum. Therefore, you need to control the humidity. Buying a humidifier is the simplest way to achieve the right conditions for your grow tent.

The humidifier will assist you in the following:

Maintain temperatures

Extreme temperatures in the grow tent can easily render your plantation useless. It is, therefore, essential to acquire an appliance that will keep the temperatures subliminal. The humidifier can control the humidity and, consequently, the temperature.

Air balance

The humidifier will indicate the moisture level in the air of the grow tent. To attain the best standard, you only need to adjust the settings on the humidifier. Air is an essential asset for growth, and through the appliance, the ratio to moisture will be well balanced.

Remove impurities

The humidifier not only regulates the moisture in the air, but it is also responsible for removing impurities. The appliance will filter out unnecessary particles such as pollen, airborne impurities, and dust, which may pose a threat to the plants.

Humidity related problems

Humidity can easily impact the plants either positively or negatively. Low humidity can lead to discoloring of the leaves, stunted growth, and death of the plants. High humidity may lead to bacterial infections. It is, therefore, essential that the humidity is maintained at an optimum to foster proper growth, reduce the susceptibility of bacteria, and promote healthy plants.

Different types of Humidifiers for Grow Tents

There are many humidifiers available in all retail stores countrywide. However, most of them fall into three basic categories.

They include the ultrasonic humidifier, cool mist humidifier, and the warm mist humidifier. All of these humidifiers vary in their approach to humidity management but still get the job done. Let's dive in deeper to get a better sense of these humidifiers.

The Cool Mist humidifier

As you might already have guessed, the cool mist humidifier is designed to release cool mists into the air to increase the humidity. It does this by sucking in air from the room and discharging it to the grow tent.

The Cool mist humidifier is power-efficient as it's engineered to recycle air without using a lot of energy. As a result, you can save a lot of money on electricity bills. Additionally, it is simple to operate and clean. With this humidifier, you won't be needing a manual for long as the device is basic. Cleaning does not pose any health or danger risks.

However, this device is quite noisy. Additionally, the filter installed in the device needs to be regularly changed.

The Warm Mist Humidifier

Different from the cool humidifier is the warm mist humidifier. As the name suggests, this device increases the moisture of a room by discharging warm mists. It does by heating the water to boiling point, then the vapor is blown into the air. It has a heating element similar to what showers and kettles have.

One of the perks of using this device is the price. You will find that most warm mist based humidifiers are affordable. Additionally, they run quietly when compared to the cold mist humidifier.

The warm mist also destroys bacteria, and other pathogens that might pose a risk to you and the plants in the grow tent.

However, cleaning these devices can be a nightmare because of their design. Secondly, they are quite expensive to operate as the heating element tends to use more electricity to heat the water. You also need to be on the lookout for mold. Mold tends to grow and multiply in areas that are warm and moist.

The Ultrasonic Humidifier

The ultrasonic mist humidifier is a hybrid that combines the functional properties of both humidifiers. This device is capable of discharging both warm and cold veils of mist into your grow tent. It also has a fan to help it accomplish this task.

As mentioned above, this humidifier combines functional properties of both the warm and cold mist humidifiers. Additionally, it runs smoothly and quietly. The ultrasonic humidifier also releases fog.

However, for all those functional features, comes a hefty price tag. Additionally, operational costs are high as it consumes more power and does not use regular electricity.

So, with that said, which humidifier is the best option for you and your grow tent.

How to Choose the Best Humidifier for Your Grow Tent

There are different types of grow tents. At the same time, there are many humidifiers, some small some huge, all of which exist to help you control the humidity levels of your grow tent. As a result, you need to factor in the following before settling for one.

Humidifiers for Recommended Room Sizes

First, you need to gauge the size of your grow tent. Small humidifiers comfortably maintain the humidity of a 300 square feet grow tent. A medium humidifier will control the humidity of a 300-600 square feet grow tent. A large humidifier will serve a grow tent that measures up to 1000 square feet.

Tank Capacity

Closely related to the size of the room is the tank capacity of the humidifier. It goes without saying that for a large grow tent, you need a humidifier with a large capacity and vice versa.

Type of Plant(s)

You need to know what conditions your plants grow best in, before settling for one. For instance, tropical plants do great in warm temperatures. So, in this case, a warm humidifier would be great.

Ease of Use and Special Features

How long do you want the device to run for? The best humidifiers are those with relatively long run time. Additionally, this feature should be backed by an auto shut feature that allows you to set a timer for the duration you want the device to run for.


A grow tent humidifier is an excellent addition for your plants. It will help you set the environs properly for their blossoming. The air surrounding your plants must be regulated for optimum growth. With the tips mentioned above, you can easily choose the right humidifier. You can choose one that is appropriate in size, function, and remote-controlled.

If you want your plants not to wither and die, you should get the humidifier for your grow tent. It will ease your work in maintaining and will keep your plants healthy if you will be traveling. They are easy to maintain and relatively affordable.


Please Note: Just because a humidifier is marked, for example “Baby Room”, it will still work for other things, for example “Living Room” or “Plant Humidifier”

Items To Buy

Again, the humidifiers below are probably the ones that you will need to buy!

The prices of these are low, medium and high. This will give you the best range. The lower prices will not have all the bells-and-whistles, and the higher price one's will.

  • 💙💙US ETL Certificate Listed. ITC-608T thermostat temperature and humidity controller is ETL listed, and rigorously tested for quality control and safety.
  • 💙💙Three in one Multifunctional Temperature and Humidity Control Mode with Dual Relay Output. ITC-608T can work as a temperature controller, a humidity controller, a temperature and humidity controller. First, only plug temperature sensor with cooling and heating equipment. Second, only plug humidity sensor with humidifier and dehumidifier equipment. Third, plug both temperature and humidity sensor with cooling/heating and humidifier/dehumidifier equipment.
  • 💙💙Supporting calibration, compressor delay and saving reset setting values. Centigrade or Fahrenheit degree display, easy to set, PV and SV dual display windows. And with compressor delay for protecting cooling device. ITC-608T can save the original setting values in case accidentally power-off.
  • 💙💙More power up to 1800W. Temperature control range is -40-212°F(-40-100℃), humidity display range is 5 -99.0%RH. Max Loading: 120V 15A 1800W. Temperature senor is waterproof while humidity sensor is not.
  • 💙💙Multifunctional usage. Temperature and humidity controller ITC-608T can be used in home brewing (refrigerator), fermenting, Greenhouse, terrarium, reptile, planting (mushroom), meat storage and cooking.
  • Dehumidifier for Space Up to 2000 Sq. Ft: Our dehumidifiers are able to remove up to 34 pints (under 95°F,95%RH condition) of moisture per day. (Please note: under 95°F,95%RH condition,the max dehumidification capacity up to 34 pints) in areas up to 2000 Sq. Ft and adjust humidity from 30% to 80%.It is a dehumidifier ideal for any basements, office, home, bathroom, bedroom, kitchen, stockroom, living room, laundry room, cellars, crawlspace, etc..
  • Unique Design for The Modern Home: The Waykar dehumidifiers designed with modern look. With 360° rotatable wheels and ergonomically lift up handles, you can move around this dehumidifier easily. A quiet fan that won't disturb you when you sleep or at work, adjustable fan speeds for multiple choices. 24-hour Timer Setting for preset operation and reduced energy consumption
  • Intelligent Control: After you set your desired humidity, the dehumidifier will run intelligently. Humidity Auto Control-Simply adjust to your desire humidity, it will work smartly, when it reached its designated humidity, it will automatically stop working and then automatically restart to dehumidify when the humidity above target is sensed. Automatic Shut Off/On-Shuts off automatically when the bucket is full and switch it on again after the bucket emptied. Power Outage Automatic Restart
  • Easy To Use: Auto Drain - The unit comes with a 6.56 feet drain hose that you can attached to the drain pipe hole to continually drain water that is dehumidified. Manual Drain - The water tank is 0.66 gallon/2.5 L,when it reaches maximum capacity, the "Full Tank "indicator will light up, the dehumidifier will automatically switch off until the tank has been emptied. Meanwhile, a reusable and washable filter preserves fresh and clean air quality
  • Support: All of Waykar Dehumidifiers are covered with 30-Days Money Back if you are not satisfied with the product, 1 year warranty, 2nd year warranty extension and lifetime expert tech support. Please don't hesitate to contact us if there is any question, we will reply to you within 24 hours and help you solve the problems. Waykar customer support team is always just one-email away
  • 【Powerful Moisture Removal】Our Dehumidifier for basements removes up to 70 pints (under 95°F, 90%RH condition) of moisture per day (Please note: The max dehumidification capacity is up to 70 pints under 95°F, 90%RH working condition) for spaces up to 5,000 Sq. Ft. Being able to adjust humidity from 30%RH to 80%RH,it is a perfect dehumidifiers for large room or basements, homes, offices,bathrooms,bedrooms,kitchens,stockrooms,living rooms,laundry rooms,dgarage,dorm room,apartment and crawlspaces.
  • 【Intelligent Touch Control】 This basement dehumidifier with digital display offers a convenient and accurate humidity level readout, you can operate it easily. Auto Humidity Control: Simply set the ideal humidity level,Kesnos dehumidifier for bathroom will smartly sense the room humidity and maintain your preset humidity. 24hr Timer: Allow you to preset the time to turn on or off the machine. The smart dehumidifier has an intelligent automatic restart function after power failure recovery.
  • 【Unique Design For Modern Homes】This Kesnos 70 pints home dehumidifier is designed with a sleek and modern look. The castor wheels and ergonomically recessed handles allow you to move this dehumidifier easily. A quiet fan won't disturb you when you sleep or work, and this dehumidifier for bedroom has two speeds for you to adjust. With the dry clothes function, you simply place the dehumidifier in a room where you can hang the wet clothes and let it dry clothes naturally.
  • 【Easy To Use Dehumidifiers】The whole house dehumidifier will run and will automatically shut off when it reaches your preset humidity level. As our basement Dehumidifier with Drain Hose,this portable dehumidifier has two drainage options: Auto Drain: With the included 6.56ft/2m drain hose, you can drain the collected water continuously without emptying the water bucket. Manual Drain: The bucket full indicator alarm system let you know when the water bucket (1.19 Gallons) needs to be emptied.
  • 【Excellent Customer Support】All of Kesnos Dehumidifiers are covered with 30-Days Money Back if you are not satisfied with the product, 1 year warranty, 2nd year warranty extension and lifetime expert tech support. Please don't hesitate to contact us if there is any question, we will reply to you within 24 hours and help you solve the problems. Kesnos customer support team is always just one-email away.

Other Questions

Should I put a humidifier in my grow tent?

Plants thrive well when the level of humidity in the tent gets controlled. Too much dry air may harm your plants. They can dry if these conditions persist. The same way room humidifier works, it’s the same way they will work in your tent.

Grow tents or house without a humidifier is as good as not having one. No plant will grow without moisture. Humidifiers come in different sizes for different grow tent sizes. Whether small or big, there is a provision for that.


What kind of humidifier is best for plants?

There are different humidifiers for grow houses. Although they function differently, they serve the same purpose-moisturizing plants. They include ultrasonic, air washer, evaporative, warm mist, and cool mist humidifiers.

The best humidifier for plants depends on the size of your plant house or tent. Type of plant, type of mineral dust you will use among other factors. Some of these humidity controlling devices produce warm mist. While others produce a cool mist. It all depends on what you want to feed your plants.

When buying, compare their performance. And specifications to get the one that best suits your plants.


Do humidifiers cause mold?

Molds grow in areas with high humidity which is not controlled. People use dehumidifiers to reduce mold buildup, especially in the winter period. Humidifiers produce controlled humidity to resolve dry air issues.

Since the humid levels for humidifiers get controlled, they can’t cause mold build-up. In any case, before controlling dry air, you should measure the level of humidity in the room. This way, you get a clear guide on the required humidity. You can use a hygrometer to measure the humidity level.

Humidifiers that are not cleaned, have a high risk of housing these molds and bacteria.


If you require more information, please check these references

Emission of bacteria from air humidifiers , article, "", retrieved on, Mon 29-June-2020
Gardening under lights: The complete guide for indoor growers , article, "", retrieved on, Mon 29-June-2020
The savage garden, revised: Cultivating carnivorous plants , article, "", retrieved on, Mon 29-June-2020

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