Best Dehumidifier For 4x4 Grow Tent

Why is Humidity Control So Important?

When your plants are small, humidity is easier to control.

It's as cannabis plants grow bigger and require more water when the humidity issues pop up.

With bigger plants comes bigger canopies.

This leaves more room for moisture to become trapped.

As these water vapor particles fester, it can lead to bud rot and powdery mildew.

When these conditions transpire, they will affect your yield.

However, powdery mildew and bud rot can also be fatal to the whole plant.
How Do Dehumidifiers Work?
To get a better grasp on what is the best dehumidifier for grow tent, you should understand how these tools work to decide which is most suited for your environment.

Dehumidifiers may come with many bells and whistles.

Bare bones, they all work the same way

A fan inside of the dehumidifier pulls in the grow room air.

When the air goes through the dehumidifier, it comes into contact with cooling coils inside of the mechanism.

This lowers the temperature of the moist air, eliminating water vapors.
What Size Dehumidifier For A Small Grow Tent?

For a small grow tent, such as a 4 x 4 foot grow tent, even the smallest of dehumidifiers will do just fine.

As we mentioned above, the fact of the matter is that a 4 x 4 foot grow tent only has 16 square feet of lateral space, plus the height, so in all reality, finding a dehumidifier that cannot handle a small grow tent like this will actually be a challenge.
Why Use A Dehumidifier For A Grow Tent?

Simply put, weed plants require a specific level of humidity to function and grow properly.

The level of humidity will also influence the temperature level, which also needs to be kept pretty constant at a certain level. The point here is that the rate of nutrient absorption, water evaporation, growth, and the health of the roots all depend on a specific humidity and temperature level.

So, if you have a grow tent and live somewhere the humidity is always high, you will need a dehumidifier to keep the humidity level in the grow tent in check.
Evaluating Your Grow Room's Dehumidification Needs

The size of your grow room is significant for you to know how many dehumidifiers you need and where each of them should be placed.

When it comes to knowing what your grow room needs, always consider how many plants you plan to grow.

This'll let you know how much water you'll need in a day and once you know more about that, you can quickly estimate the moisture and humidity level your room should have.

Aside from considering how much moisture is needed by your grow tent or room, another thing to consider is the temperature management and whether you'll make use of CO2.

For temperature management, it's always good to keep the room at around 70-80°F. This range is good enough for growing most plants, including vegetables and fruit-bearing ones. Flowers would survive better in the higher range.

CO2 enrichment can get a bit tricky, but this should also coincide with your dehumidifier. Having a high humidity level in your grow room will not work well with CO2 equipment.

Lastly, humidity relies on where your grow area will be. If it's somewhere isolated and cool, and you don't plan to visit it a lot, additional allowance is no longer necessary.
Best Dehumidifier for 4x4 Grow Tent
IVATION 70 PINT ENERGY STAR DEHUMIDIFIER

If you have a huge growing space but have noticed rising humidity levels or the appearance of white powdery circles on your plants' leaves or the dreaded appearance of bud rot (when your leaves, buds and/or pistils darken, discolor and dry up), this is the dehumidifier for you. This unit alone is capable of taking a whopping 70 pints out of the air per day so you can be sure this unit won't leave your buds sitting in damp conditions.
The pros of this product are: its high dehumidifying power; its effective prevention of mold, mildew dust, and bud rot; its easy installation and huge 1.3-gallon tank; and its useful settings and adaptable fan speed.

This Compressor Dehumidifier Keeps Spaces Up to 4500 Sq. Ft. Cool & Comfortable by Removing 70 Pints of Moisture/Day
Powerful Dehumidifier Prevents Mold, Mildew, Dust, Allergens & Odors for Healthy Air
Low Maintenance & Easy Operation; Simply Plug-In, Select Settings & Empty 1.3 Gallon Reservoir
Bright LED Display Indicates Humidistat & Setting, Fan Speed, Timer, Filter Alert & More
Highlights Include Eco-Efficiency (ENERGY STAR Certified), Casters, Auto-Defrost, & Auto-Restart

Here we have another nice small dehumidifier that should fit into even the smallest of grow rooms with ease. It comes in at a super compact size, so it will not take up too much space that you would otherwise use for your plants.

The fact that the Ivation Dehumidifier is so small is also helpful because it is fairly energy friendly and won't cost you big time in terms of your electricity bill. There is also the fact that it is fairly quiet so its noise won't disturb you too much.

Keep in mind that the Ivation Dehumidifier is ideal for rooms up to 100 square feet, which is more than enough to suit a 4 x 4 grow tent. This thing does have a fairly decent sized water reservoir, considering the overall small size of it.

It can extract up to 25 ounces of water from the air on a daily basis, which is quite a whole lot not doubt. . It also features an auto shutoff capability, so it shuts off when the reservoir is full, and therefore will not cause damage to your grow tent. The water reservoir is removable for easy water disposal.

However, what is really impressive about this small and affordable dehumidifier is that it does come with a digital gauge, so you can set the exact humidity level that works best for your marijuana plants at any given time.

What is also cool is that when the humidity level goes 5% off of your set target, this dehumidifier will turn on by itself to maintain proper humidity levels.