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Are you looking for the most popular and best grow tent sizes? We've selected the very best grow tents from the best manufacturers. These amazing grow tents are each very popular for each specific need and goal.

One should always remember that tent size is significantly important for plant yield. Likewise, your tent size contributes to a proportion of how you should expect your results.

The main contributors to plant yield are lighting, temperature, feeding, environment but these factors are also dependent on tent size. If you have too short of a grow tent, it is possible that your plant will hit the grow light at the top, causing all sorts of issues. If your grow tent isn't wide enough for your number of plants, then you will have humidity and mold issues, as your circulation will be negatively effected. As an example of how you need to think about size and accessories, one of the factors in determining the number and location of temperature and humidity sensors should be the tent size.

We must admit that some of the challenges we need to consider in growing plants in a grow tent is the number and kind of plants we can sustain given the size of the tent. With so many options how do we choose the right grow tent size? If you are not sure what size of tent you should invest in we would like to introduce our most popular tent sizes and how each tent size is best for every objective.

2′ x 4′ x 6’7″ Adjustable Height Grow Tents

This tent size is ideal if you are just starting small. It can sustain two to three mature plants that can grow up to 4-5 feet tall from the pot. This tent will give you zero light leaks if you want complete darkness in the nighttime. This is perfect for starters that would like to develop this new hobby but don’t have a big space for it yet. It is important not to overcrowd the plants in a small place since the more plants in your grow tent, the more living organisms present will constantly compete to have enough space, light, and air to breathe. We don’t want to oversaturate the living organisms present in the tent and in the end, don’t have enough resources for them to survive. This tent comes with a free 12″ height extension kit.
If you want your grow tent to be taller, you can simply adjust the height!

2′ x 4′ x 6’7″ Adjustable Height Grow Tent

4′ x 8′ x 6’7″ Adjustable Height Grow Tents

The size of the grow tent is the very first and most important issue that needs to be decided on when planning for an indoor garden. This grow tent is very convenient and popular since it can fit up to three to five mature plants. You would easily prefer this type of tent when growing plants in your home since you can grow more plants and at the same time easily control everything with this grow tent. Controlling pests remains to be an issue if we grow plants but using this regular-sized grow tent you can easily control your environment and expect a greater yield. This grow tent is height adjustable to increase your yield and plant size of up to 2X!

4′ x 8′ x 6’7″  Adjustable Height Grow Tents

4' x 4' Adjustable Height Grow Tents

We definitely can relate that growing plants can be quite addicting especially after the success of your first grow tent plant. That’s why you need to sustain your need using a larger tent size. This grow tent size can sustain up to 7 to 9 plants. The larger the room the more you can sustain more types of plants thus, this tent size is ideal for production. This grow tent size is one of the most popular since you can actually produce more using this tent. It is not too small and not too big, it is the perfect size! This tent has adjustable extension poles allowing you to increase the height of your grow tent from 6′ 7″ to 7′ 7″.

4' x 4'  Adjustable Height Grow Tents

5′ x 9′, 6' x 11'' Adjustable Height Grow Tents

This large grow tent will guarantee convenience, flexibility, and assurance. You can be flexible with this type of tent and split test plants under different environments or feeding schedules. This large grow tent allows room for more customization. This is the most popular tent size for serious growers out there. This grow tent can fit up to 12 plants and comes with a free 12″ height extension kit giving you more reasons to be flexible.

 5′ x 9′, 6' x 11'' Adjustable Height Grow Tents

Congratulations, you just found the best grow tent guide on the internet. We'll be your friend on this journey of growth and discovery, and hopefully help reduce your growing mistakes and questions! Join us below for the essential grow tent info...

Grow Tent Buying Guide

When shopping for a grow tent, you have to keep in mind a few items. This first is your budget, the second is your height, and the third is your width. Your best bet is likely to figure out your size range, so how high can your grow tent go? The Gorilla Grow tents and a few other brands have height extensions to increase the height of tent for those taller plants. For the width, they have grow tents as small as 3 ft wide and large as 10 ft! Figure out which size ranges of grow tents can fit in your grow space, then figure out if your budget fits in with more lower quality grow tents like Idojan or if you can afford the top quality of Gorilla or Lighthouse.

Why spend more on a high end grow tent?

Well, it usually comes down to the thickness of the canvas used in the walls of the grow tent, the quality of the metal used in the poles (that will be holding your expensive light above your precious plants), and the care in the stiching of the zipper and canvas.

What size grow tent do I need?

Price is drastically impacted by size of your grow tent, from the largest grow tents, to the low height short grow tents. Measure your grow tent area before purchasing one, and ensure that you won't have a tent that is too large for your area (bad for ventilation), not large enough for our plants (unless you're doing a sea of green with autoflowers, caution on crowding plants!), or too tall for the ceiling of your grow tent room.

Can I build my own grow tent?

Yes you can! It kinda sucks, but if you're really good at stitching, and can build a dependable frame that won't drop your light and start a fire, then have at it!

What are the grow tent brands?

Here is a list of the largest grow tent brands in the world:

  1. Gorilla Grow
  2. Lighthouse
  3. Apollo Horticulture
  5. Vivosun
  6. Virtual Sun

Who is the best grow tent manufacturer?

That's a loaded question, and we're up for debate, but from pure quality of materials used, Gorilla Grow tents are the best. Lighthouse and Apollo are also rated high for lack of a better word, medium quality, but more affordable price than similar sized Gorilla grows tents.

So you bought your grow tent and your lights, and your nutes, and everything else, now let's put it all together!

What about a shopping list for all the grow tent accessories I will need?

Well, we recommend checking out the grow tents on Amazon, as well as the accessories found here.

Where can I buy a cheap grow tent kit?

Truthfully, you may not want a grow tent kit. But if you do, there are some kits available that are decent, including the Yield Lab Kit (will still need to buy a tent) or this 5 gallon hydro grow system kit.

Setting up your Grow Tent

Chances are your grow tent came with instructions, so read those! Most major brands do, and if you bought it used, or simply lost the instructions, we're here to help you get your tent setup, no problem.

Step 1 - Gather Needed Tools

You will need:

  • A friend (it's always nice to have someone's opinion and a helping hand)
  • Flathead screwdriver
  • Tape measurer
  • Wire cutters
  • Scissors or a sharp knife

Step 2 - Read the Instructions

The first thing you'll need to do is assemble the tent itself. Use the instructions included or look online on the manufacturers video. Here is a collection of grow tent setup pictures that may help if you can't find the tent instructions.

Step 3 - Clean, Unbox, and Organize Everything

You should confirm that you have:

  • HPS, LEC, CMH, or LED Grow Light with Ballast or other accessories
  • Inline fan
  • Carbon filter w/ pre-filter
  • Ratchet light hangers (2 per system)
  • Duct clamps (x2)
  • Ducting
  • Timer

Step 4 - Determine Ventilation Setup

There are several common configurations but we recommend hanging the fan and filter inside the tent. For small to mid-sized carbon filters this is the best solution. It maximizes growing footprint and draws the air in through the filter allowing the air to move slower and increasing the overall effectiveness of odor removal as well as removing the hottest air from the top of the tent.

Where carbon filters are too large to hang from the ceiling of the tent, they should be placed on the floor inside the tent when possible. The only disadvantages here are that they may draw more warm air down to plants when they are active and they take up grow space.

Placing the filter and fan outside the tent is the least desired solution. It saves space but has two main drawbacks. It pushes air through the filter at higher speed reducing the effectiveness of the filter for odor control. The second drawback being that fan noise is increased since it is located outside the tent. This solution is only used with very large carbon filters and when grow space is at an absolute premium.

Step 5 - Prepare The Carbon Filter

Installing the air filtration/odor control system. First you will need to slide the pre-filter onto the carbon filter and secure it with the included bands. Depending on your setup choice from the previous step, follow the following steps for setup A, B or C below.

Step 5-A - Hanging Inside The Tent

  • Using one of the adjustable nylon straps included in the grow tent kit, hang the inline fan with the tapered end pointed towards the tent exhaust hole you want to use. Try to center the fan on the strap so it is balanced.
  • Using the remaining adjustable nylon strap from the grow tent kit, hang the carbon filter assembly with the flange pointed towards the inline fan. Try to center the fan on the strap so it is balanced.
  • Measure the distance from the beginning of the filter flange to the beginning of the inline fan flange. Cut that length of ducting using the box cutter and wire cutters.
  • Using the length of ducting you cut, secure one end to the fan flange using a ducting clamp. Secure the other end of the ducting to the carbon filter flange; no clamp is needed (this will be a tight fit).
  • Run the remaining length of ducting out of the exhaust hole of your choice, and secure the other end to the tapered end of the inline fan, using a duct clamp.
  • Run the fan power cord out of the nearest tent cord hole in the rear of the tent.

Step 5-B - Placing Inside The Grow Tent

  • Set carbon filter assembly on the tent floor in desired location.
  • Place the inline fan on top of the filter with the tapered end pointed up.
  • Ensure that the fan flange is inside of the filter flange and secure with 1-2 wraps of foil ducting tape (not included)
  • Attach ducting to fan flange and secure with a ducting clap.
  • Run the ducting out of the desired grow tent ventilation opening.
  • Run the fan cord out of the nearest cord hole in the rear of the tent.

Step 5-C - Placing Outside The Grow Tent

  • Set carbon filter assembly on the floor in the desired location outside of the grow tent.
  • Place the inline fan on top of the filter with the tapered end pointed down.
  • Secure the fan to the filter with 1-2 wraps of foil duct tape (not included).
  • Attach the ducting to the fan with a duct clamp.
  • Run the ducting into the tent ventilation hole of your choice.

Step 6 - Hang The Lighting System

  • Using two ratchet hangers per light, hook the crossbar at the top of the tent with the hooks that are attached to the ratchet assemblies of the hangers.
  • Set the hooks attached to the rope end of the ratchets to equal lengths.
  • Place a hook in each of the two hanger brackets on the lighting system.
  • Run the light system power cord out of the nearest tent cord hole in the rear of the tent.
  • You can now adjust the height of the light by simultaneously pulling the two ratchet hanger ropes. You can lower the lights by pressing the tab in the ratchet assembly of the hangers. Be sure to hold onto the ropes when lowering so you can control your descent.

Step 7 - Install The Grow Light/Fan Timer

  • Plug the light system cord into one side of the timer.
  • If you will be timing the fan as well, plug the fan power cord into the other side of the timer. Otherwise just plug it into a constant power source.
  • Plug the timer into a 120V wall socket, extension cord or power strip.
  • Follow the instructions included with the timer to set run times.

You’re ready to add your plants and get growing. Before turning everything on be sure to double-check your electrical connections and hanging straps and hooks.

Additional Grow Tent Information

Watering in a Grow Tent

This can be a huge pain in the ass. Especially if you're doing soil in your grow tent. If you're doing hydroponics like bubbleponics or similar, you won't have to worry so much about watering, as you will likely have it all piped via automated timers. But soil grows can be awfully messy with watering every couple of days in flower. I've seen grow tents that have gotten moldy from not being dried out properly after watering. Also I've seen plants dying of dehydration from lack of watering from the lack of humidity and watering on a preset schedule. Water your plants when your soil is dry up to the second crease of your finger. Basically you don't want to flood out your soil and keep it too wet, which can cause the plant to be "spoiled" to some degree.

Nutrients and Grow Tents

The nutrients you choose to use in your grow tent operation depend on a number of factors. Our best advice is the following, use a brand name nutrient, that you can trust and is widely reviewed on the internet (or if you know someone who successfully used a certain nutrient on their crop)

Getting Rid of Pests and Bugs in Your Grow Tent

States that have legalized, like Colorado, have started to publicize the pesticides that are allowed to be legally used in growing cannabis. You can find the legal pesticides for cannabis growing in CO here. One of the best ways to avoid pests in your grow tent is to keep it clean inside, and the surrounding area outside your tent too.

Lighting Tips for Grow Tents

  • Adjusting the height of your lighting as the plants grow is essential. Different lighting types (LED, HID, etc.), lighting wattage, and reflector types all have recommendations regarding distance from plant canopies. Be sure to check the recommendations for your light(s).
  • LEC and LED grow lights can
  • Be careful when installing bulbs and plugging in ballasts and light sockets. Damage to your lighting can occur if mistakes are made. 
  • Water and electronics don’t mix well. Avoid splashing water on your lighting equipment, including ballasts.
  • New HID bulbs should be run for at least 12 hours on their first start-up to ensure maximum bulb life.
  • When changing bulbs in HID lights, do not touch the glass with bare hands, oils from your hands can damage the bulb. Wear gloves to avoid this.

Cleaning Your Grow Tent

Clean your grow tent with diluted bleach or similar strong cleaner, you don't want mold, mildew, fungus, or bugs after each crop or accumulating during the grow. You can read an indepth article on cleaning your grow tent here.

The compact and light-weight design makes the Mini Dry the most efficient dry trimmer for urban and boutique grow operations. Wearing handles will let you maneuver with the machine quickly whilst the compact measurement means that you can retailer it within the smallest areas bother free.
Proprietary subject material reduces want for lubricants and decreases friction through getting rid of metal on metal interfaces.

Height: 21" - Width: thirteen" - Period: 18"
Weight: 32 lb
AC Voltage: 120V
AMPS Required: Dedicated 15A circuit
Long slender drum maximizes reducing surface leading to sooner trimming
Scale back resin loss and stickiness without a warmth building up
Removable trim bin
Computerized trimmer
Some other nice item from Flora Hydroponics

Trimming sucks. However it does not must. New Twister T4 Dry Trimmer uses advanced trimming technology to do the give you the results you want. It makes your life more uncomplicated and your pockets fatter. The Twister T4 is available in two variants: Wet or Dry. The Dry version of the T4 trimmer comes with a specialised tumbler and a redesigned 70 micron leaf collection bag to catch excess subject material from the trimming process. With Twister's new DRY Soft Tumble technology, you'll be able to trim a broad vary of moisture content, from 11% to totally hydrated, with a easy swap of the tumbler. Select the machine that very best meets your trimming wishes.
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Input Voltage: 115V. Current Draw: 2A. Weight: 56lbs / 25.4kg. Length: 25in. Width: 15in. Height: 16.5in.

Watering your plant is undeniably a crucial part of the growing process. You care for your plant like you would care your baby. When you want to nurture it perfectly, everything you provide it should be perfect, even the amount of water! Smart grow tents presents the ultimate guide to everything you need to know to water your cannabis the right way.

How much water does cannabis plant need?

When you water your cannabis make sure you have some runoff water after your pot is thoroughly soaked. Water at least quarter the volume of the planter. For example, if your planter is 1L, pour about 0.25 L of water in each irrigation.

Avoid keeping your roots saturated with proper drainage. Poke holes in the bottom of the pot else your plant may get waterlogged or overwatered. Some people put rocks or gravel in the bottom of the pot to aid drainage.

When should I water cannabis plant?

Cannabis does not like continuous irrigation!  

Overwatering can damage the root system and rot the pant. It is important to water them thoroughly and then wait until its substrate dries completely. The drying process is essential for preserving the crop.  Thus, you only need to water it every 3 -5 days. However, if you are growing it in a small planter at a later stage, you will have to water it more often.

What is the best water for cannabis plant?

Marijuana grows optimally with temperatures around 22 degree Celsius (room temperature) a pH of about 6.5. At this pH, the plant can easily absorb all the nutrients present in the soil.

Sometimes, the plant suffers from ‘nutrients lockout.' This is not due to excessive or deficiency of nutrients. This is mostly caused by the pH of water. Highly acidic water will restrict the plant from taking up the calcium and magnesium present in the soil, while highly alkaline water will hamper iron absorption.  

What is the correct nutrients formula for cannabis plant?

Firstly, it is important to note that providing nutrient water to cannabis plant every day will lead to salt deposition over the soil surface. Therefore, make sure to do it alternatively. The plain water will clean salt deposits, if any.

The most important nutrients in the life of cannabis plant are Nitrogen, Phosphorus, and Potassium, sometimes abbreviated as N-P-K. Bottled nutrients have different proportions of these. The bottles list chemical ratios as three numbers. For example 20 – 5 – 5 contain five times more nitrogen than phosphorus and potassium. 0 - 0 - 10 contains only potassium.

Different stages of the cannabis plant demand these nutrients in various proportions.

Vegetative Stage:

N (High) – P (Medium) – K (High)

Purchase the bottle that has a high amount of nitrogen. Nitrogen supply is of uttermost importance during the initial vegetative stage of the plant. Thus, bottles with numbers 9-3-6 and 3-2-4 prove to the best for this stage. A 5-5-5 numbered bottle also works well, as it has a generic even NPK ratio.

Transition Stage:

The best nutrient ratio for this stage is 5-5-5. To prepare for the flowering stage, the plant needs nitrogen to develop more leaves and stem.

Flowering Stage:

N (Low) – P (Medium) – K (High)

The plant needs to shift focus from growing more stems and leaves to growing more buds. Therefore, it is important to cut down on the nitrogen supply. Buds demand phosphorus and potassium supply for their growth. The best nutrients ratios for this stage are 5-15-14, 2-7-7 and 2-3-5.

Are liquid fertilizers good for cannabis plant?

We advise using liquid fertilizers minimally. The roots of marijuana plant absorb liquid fertilizers very swiftly. No, this is not a good thing because it leads to the misconception that the plant needs more nutrients. Thus, we intend to pour more liquid fertilizer to the plant. Ultimately, harming the plant.

Therefore, in case there arises a need to apply liquid fertilizer to the plant; make sure to mix the fertilizer in water at the source. The fertilizer should well-diluted and applied in appropriate proportions. When you have an option to choose from chemical and biological liquid fertilizers, without a second thought, go for the biological one. They are safer for the plant and non-toxic for your health.

How to know if it’s over-watered or under-watered?

Over Watered Plant


  • Plant starts dropping immediately after watering
  • Leave are firm yet completely curled


Don’t keep watering it as you regularly do.

Dig your finger into the soil check if the soil is dry up to the first knuckle. If the medium is dry then water it until you see 30% runoff water drained

Underwatered Plant


  • Plant starts wilting
  • Leave become dry, lifeless and crispy


Water in large quantity and more often.

It is possible that the plant has outgrown the space. If this is the case, transfer it to a larger planter that can hold more water.

Products to keep your cannabis plant well hydrated

Drip line

Most efficient way of watering plants is through drip line. It ensures that the plant gets water consistently and in appropriate quantity. It prevents waterlogging as it doesn’t let water stay on the surface. It helps distribute the water evenly across the planter.


A product of heated obsidian, perlite, is mixed with soil to loosen it. Perlite is an organic lightweight soil conditioner. It prevents caking while improving soil drainage and aeration. This also helps promote good oxygen flow.

Super soil

Soil mixed with wood chips harms cannabis. Growing your marijuana in composted super soil is important. Organic super soil contains forest humus, sandy loam, and sphagnum peat moss. It is very healthy for cannabis plant.

Smart pots

Smart pots are weightless, flexible, reusable and eco-friendly fabric containers. They provide better oxygen flow, better drainage, and a better cooling system; It's a three-in-one solution for better cannabis growth.

Cannabis Watering Guide Conclusion

From this basic guide, novice growers may get a fair good idea about watering their cannabis. However, it is only a guide. Modifications to the basic principles can be made according to the choice of strain, type of medium, local climate and various other factors. We always encourage experimentation.


We pride ourselves in providing the very best selection of grow tents and grow tent accessories for cannabis and other indoor plants. Enjoy our helpful Blog articles and shop with confidence today. We appreciate your support as a small family business.