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Building an Ultra Stealthy Grow Cabinet

This article comes courtesy of the good folks at seattlecannabisjournal.com, and was re-edited for clarity and ease of reading. Click Here to view the original article in all its glory!

The day I got a recommendation for medicinal Cannabis was a relief. This was followed by the knowledge and urgency that I needed to get some plants in the ground immediately.

This had been a long-time dream of mine, and I fondly imagined my first harvest, curing my flowers to perfection, and collecting their resin for concentrates. I saw myself carefully journaling their progress, and eventually becoming an expert caretaker of myself and my marijuana garden.

Then reality set in: I have a small space, in a small house, in a crowded neighborhood.

Momentarily discouraged, I quickly scrapped the idea of a dedicated room filled to the brim. I began with getting clear about my intentions; I wanted to inconspicuously and autonomously produce my medicine. This was a much more respectable and realistic goal, and one that I could embrace.

After months pouring over cannabis related text and furrowing my brow at various nooks throughout my home, I saw through the problem. I would build a stealthy grow cabinet!

On Craigslist I found a cabinet kit still in the box for only $35. It came in at 24″ L x 30″ W x 70″ H. Next, I purchased a 6″ inline fan for another $100. The fan combined with a 400 watt light and Cool Tube from a previous grow gave me something to design around.

My sights set, I loaded Google’s 3D rendering freeware, Google SketchUp, and got to work.

Sirius: Google SketchUp can be pretty tough to use without training, especially if you’ve never used it and you just want to design one thing. Rest assured: some paper, a pencil, a little math, and careful planning will work just as well!

The first thing to deal with was the Intake and exhaust – a clean environment and fresh air for my plants.

A rule with any grow space is to have the intake’s opening twice the open area of the exhaust’s.

Important: The opening for your intake hole should be about twice the size of your exhaust hole.

My inline fan with had 6″ opening (28 square inches) so I would need 56 square inch opening. I went with two louvered grills that were 5″ x 8″ which gave me 80 square inches – 30% for the louvers = 56 square inches. Perfect!

Sirius: This is a great point! In any enclosed grow area such as a tent or grow cabinet, it’s important to have a larger opening for intake than for exhaust. This will maximize the efficiency of your fan in addition to keeping it working for longer. Plus, this will keep tents from “bowing” in, reducing your grow space.

Of course I wanted to filter the intake air to keep out dust, pet hair, pollen, mold and the like.

Next, I faced the issue of providing my plants their light.

I chose a High Pressure Sodium bulb. Since these produce more light from the side(the long side as opposed to the plug and tip of the bulb), light coverage could be maximized by positioning them front to back. Some creativity was required to install the Cool Tube to keep my HPS bulb from becoming too hot.

We learned above that the cabinet is 24″ deep. Now this Cool Tube was 20″, hardly enough room to attach two 6″ flex ducts for ventilation without having to keep a door open.

Keeping a door open is not a viable option for the stealthy gardener like me! I decided to use some creativity.

The solution I came up with was to place the duct work outside of the cabinet.

I built and installed 4″ x 10″ x 48″ wooden housing for the duct work for the exhaust of the Cool Tube (picture 3rd down). Next, three 6″ duct flanges into the back wall of the cabinet leading into the duct work spaced vertically 9″ apart.

This allowed three different height settings for the light. The unused two positions are capped off. Take a look…

I installed a sealed fan room to house the 6″ inline fan mentioned above. This sat in the top inside of the cabinet, pictured below.

Now that my fan room was set up, I allowed the exhaust to escape upward into a carbon filter. I mounted the filter inside a Rubbermaid tote to make the whole setup more discrete.

A fan speed controller and light timer are mounted on the outside of the fan room.

Next to the fan room is space for other more technical things. Here we find the ballast and command switching station.

Also, I installed a “Kill-a-Watt” device to monitor my electrical usage so I can easily calculate the total extra cost to my electricity bill each month.

I vented this area with a 4″ opening that opened into the fan room.

When all was said and done I harvested 264 grams (9.3 ounces).

Final Harvest Weight: 264 grams (9.3 Ounces)

Cost: $1.64/gram

The final bounty boasted nine ounces of dried and cured cannabis flowers.

After the initial investment, $1.64 was my total cost per gram when I factored electricity, carbon filter, and nutrients.

Affordable medicine is a right, and medicinal Cannabis sets a standard for patient autonomy. Enjoy producing your own medicine.

Sirius: This is definitely an advanced method of creating a grow box, but he makes sure to include a lot of things one needs to consider when creating one, such as ventilation and making sure to leave room for everything you need. Do you have a better/more practical/more efficient design? Let us know so we can share with the world!

See Another Stealth Grow Cabinet in Action and Build Your Own!

Was the cabinet in the above article a little too much for your sensibilities? Then check out these pics by one of our awesome readers!

Make sure to click each one to see the full size picture.

These pictures were sent in by one of our readers who has taken a far more simple/easy approach to making a grow cabinet than G.D. Bud. Here’s what he had to say about it:

“1st time grower. Plants are 1 month old, and 12″ tall now. Set up for less than $250. Used cab.w/4 bulb, 24″ T5’s, 4″ elec exhaust, Thanx for great info.”

Use the following items to make a stealthy grow cabinet just like his:

  • Old cabinet
  • Line inside of cabinet with mylar (reflective material)
  • Hang T5 grow light to inside-top of cabinet with rope rachets
  • Cut 12″ hole in back (near bottom) for cool air intake
  • Attach air filter to your intake hole if the outside air is dusty (and to protect your grow cabinet from any stray bugs)
  • Cut 4″ hole out the top to use as an exhaust hole (cut a bigger exhaust hole for a bigger cabinet, or if you’re going to intall more/bigger/hotter lights)
  • A 4″ exhaust hole uses 4″ ducting with fan to pull out hot air (drawing in cool air in through your intake).
    Remember, fan should be pointed up, to pull hot air out of your cabinet!
  • Now you just add plants!

See how one grower built his own stealthy grow cabinet (in pictures), then learn how to build your own!

10 Best Marijuana Grow Boxes & Grow Cabinet in 2020

There’s something to be said about keeping your marijuana growing operations private. Whether you’re worried that your friends, family, or neighbors will judge you, or you simply want to keep things tucked away, marijuana grow box is an excellent solution to operate more discreetly.

Also referred to as a stealth grow cabinet, the best grow box for beginners will allow you to continue growing weed indoors, but they’ll look just like regular cabinets or drawers. Nothing suspicious there at all!

The best grow box on the market will help make it easy for you to produce weed indoors. It will stay hidden and you can even reduce the heat, noise, and smells that come from growing marijuana. It can even help save you money!

Not sure where to start? We will tell you all about what an indoor weed grow box can do for you – as well as the best grow cabinets on the market.

Top 10 Best Weed Grow Cabinet: Our Picks

Best Overall

Dealzer Grandma’s Secret Garden 3.0 – Hydroponics Grow Box

  • Lifetime warranty
  • Shipped with both vegetative and bloom lights
  • Nine plants at once

Best Value

VIVOSUN 60″x60″x80″ Mylar Hydroponic Grow Tent

  • Comes with a removable clean up tray
  • Inside tool organizer included
  • Affordable option

Most Discreet

Cash Crop 6.0-2 Plant LED Hydroponics Grow Box

  • Handmade
  • Six months testing and quality assurance
  • Fully assembled

Best for Hydroponics

Opulent Systems 24x28x48 Hydroponic Mylar Water-Resister Grow Tent

  • Highly reflective water-resistant mylar lining
  • Durable
  • Easy to set up

CoolGrows 2x2x4 Feet Small Indoor Mylar Hydroponic Grow Tent (24″x 24″x 48″)

  • Easy to assemble
  • Affordable option
  • Available in multiple sizes

Growzilla 4 Plant Vertical Hydroponics Grow Box

  • High-quality LED lights
  • Tall and spacious unit that is still discreet

Dealzer 6-Pack -6 Clone LED Hydroponics Grow Box

  • Budget-friendly
  • Comes with 24/7 tech support via call or email
  • Odor control and locking features

Hellogrower 20″ Stealth LED Grow Box with Hydroponic System

  • Carbon filtration system
  • Discreet shipping
  • Comes with everything you need to start growing, including a 100% mylar interior

TopoGrow LED Grow Tent Complete Kit

  • Excellent ventilation system
  • Comes with a leak protection unit
  • Convertible light height

CoolGrows 2x2x4 Small Indoor Mylar Hydroponic Grow Tent

  • Reflective interior
  • Transparent observation window
  • Made from durable materials

Best Grow Box Reviews

1. Dealzer Grandma’s Secret Garden 3.0 – Hydroponic Grow Box

The Dealzer hydroponic marijuana grow box is perhaps the best stealth grow box you can buy. It’s affordable, coming in under $1,000, and it’s also lightweight – it weighs less than 50 pounds so it will be easy for you to move it to wherever you need it to be.

The dimensions of this weed grow box are favorable, coming in at just 36x20x16.5. When you look at this grow box, it looks like a standard lockbox – you would never guess what you are growing inside it! Each box comes with a free lifetime manufacturer’s warranty, but you’ll probably never even need it. The box is constructed with durable MDF, which is half an inch thick. This not only contributes to its longevity but also helps to cut down on odors.

Despite the small size of this grow closet, you can easily fit up to nine plants inside this box at once. It’s the perfect grow box for auto-flowering strains, and you’ll be able to produce roughly seven pounds each year.

When you purchase this hydroponic marijuana grow box, you also get a 3.5-gallon reservoir DWC tank hydroponic grow system. It comes with secure, lockable doors that will eliminate the likelihood of someone spying on what you are doing in there. The box has lighting that will support your plants throughout the vegetative and blooming stage alike. Since it is equipped with CFL bulbs, it won’t overheat, and you’ll also get 24-hour timers so you can adjust the lights automatically.

This grow box has unique military technology that you will find in military-grade gas masks. It eliminates all odors through carbon filters. You even get a two-years supply of moon dust to help your plants grow along with a hydroponic air ventilation system.

What We Liked:

  • Comes with a lifetime warranty
  • Shipped with both vegetative and bloom lights
  • Can grow up to nine plants at once
  • 2 years supply of moon dust

What We Didn’t Like:

  • Does not have a doorknob, so it can be somewhat challenging to open

2. VIVOSUN 60″x60″x80″ Mylar Hydroponic Grow Tent

This hydroponic grow tent, unfortunately, doesn’t come with absolutely everything you could ever need, but it’s also one of the least expensive marijuana grow tents you can buy. It creates the perfect conditions for growing cannabis, and it’s also relatively large so you can grow more plants.

This product has a reflective Mylar interior to help improve your efficiency in growing weed. It reduces light leakage and comes with an observation window so you don’t have to open the door – disrupting your plant growth – to see what’s going on. It’s almost completely automatic and comes with an inside tool organizer and a removable floor tray. Everything is taken care of for you!

What We Liked:

  • Comes with a removable cleanup tray
  • Inside tool organizer included
  • Affordable option

What We Didn’t Like:

  • Not an all-in-one grow tent

3. Cash Crop 6.0-2 Plant LED Hydroponic Grow Box

This hidden hdroponic grow box is a great option if you are looking to grow any kind of plant indoors – not just marijuana. It uses 150 watts LED grow lights at the top of the box as well as on the sides, and it comes fully assembled. All you will need to do is plug it in!

This marijuana grow box is odor controlled and even comes with unlimited technical support via email or phone. This is a really handy feature to have when you are just getting started, because you may run into common errors that can easily be troubleshot by experienced growers and manufacturers.

This is a truly revolutionary grow box model – it was designed after an impressive six months of testing by Cash Crop, and the plants that were produced were of a much higher quality than any they had ever seen before. This grow box has full-spectrum LED grow lighting and is handmade out of high-quality wood.

What We Liked:

  • Each grow box is handmade
  • Backed by six months of testing and quality assurance
  • Comes fully assembled

What We Didn’t Like:

  • Doesn’t come with all of the other extras you might need to get started, like fans or nutrients

4. Opulent Systems 24x28x48 Hydroponic Mylar Water-Resister Grow Tent

Just in case you are looking for the best marijuana grow box that is slightly bigger than other options, Opulent Systems 24x28x48 Grow Tent might be your best bet.

If you are worried about the mylar lining, fear not because the tent is equipped with 98% highly reflective water-resistant mylar that helps promote growth on plants. In addition to what we like about the unit is the black-lining connected to the zipper, which creates a light-proof seal to protect your plants against bugs, pests, and dirt.

The grow tent is made from durable materials, not to mention its 600D canvas with double stitching. Another feature that many newbie gardeners will love is the tent is easy to use. It is simple and easy to install even though you are a novice in this kind of stuff.

Other incredible features include a transparent observation window for easy monitoring, a removable tray floor for easy cleaning, and a storage bag to keep your tools and accessories in place.

What We Liked:

  • Highly reflective water-resistant mylar lining
  • Durable
  • Easy to set up

What We Didn’t Like:

  • Poor quality zippers

5. CoolGrows 2x2x4 Feet Small Indoor Mylar Hydroponic Grow Tent (24″x 24″x 48″)

This small indoor grow tent is one of the best for concealing your growing activities. Really more of a single plant grow tent, this product is easy to assemble and comes with multiple vents to improve aeration. It even has a viewing window so you can see what’s going on with your plants without having to damage them with white light.

You can purchase this hydroponic grow tent in multiple sizes, making it easy for you to figure out which unit will work best for you. 99% of the outside light is blocked from your plants, so all of your LED light is reflected back toward your plant and will not escape. It’s a great value if you’re looking for a starter marijuana grow box to try.

What We Liked:

  • Easy to assemble
  • Affordable option
  • Available in multiple sizes

What We Didn’t Like:

  • Not totally discreet or secure

6. Growzilla 4 Plant Vertical Hydroponics Grow Box

The Growzilla 4-plant vertical hydroponics grow box is unique hydroponics grow box – but trust us, it’s well worth your money. This grow box allows you to grow any kind of plant indoors from seed to harvest and it uses powerful Mars LED lighting (equivalent to about 150 watts HID). It uses LED side lighting to produce more vibrant, healthier plants, and it’s extremely roomy.

This best grow cabinet can house four large plants. When you purchase, you get access to an exclusive lifetime warranty, along with unlimited email and phone technical support. Again, this is a super-helpful feature to have when you are just getting started and aren’t 100% sure what you are doing!

This grow cabinet is tall, coming in at nearly six feet tall, yet still looks like a tall storage cabinet – nobody will know what you are doing!

What We Liked:

  • Everything is well-prepared, except for seeds
  • High-quality LED top and sidelights
  • Tall and spacious unit that is still discreet

What We Didn’t Like:

  • Does not have a cloning chamber – just one chamber for tall plants

7. GDealzer 6-Pack -6 Clone LED Hydroponics Grow Box

Looking for the best marijuana grow box where you can grow weeds discreetly? It comes with a built-in LED spectrum lighting g (for veg to flower spectrums; 420nm to 460nm veg & 630nm to 660nm flower), so that your weeds can grow on their own without the need for natural sunlight. No worries about air filtration since it is equipped with a carbon fabric intake and exhaust system, which helps protect your grass against pests and provides a faster air exchange rate.

With this model, Dealzer has made a new, innovative Cash Crop series with better lighting and quality exhaustion system while keeping its budget-friendly cost for beginners who wish to grow their plants in the comfort and privacy of their homes. Plus, the unit is odor controlled, thanks to the manufacturer’s 95% ONA block.

These hydroponics grow boxes come fully assembled, so no need to spend long hours reading the manual. All you need to do is look for a perfect spot in your home, and you are all set up.

What We Liked:

  • Budget-friendly
  • Comes with 24/7 tech support via call or email
  • Odor control and locking features

What We Didn’t Like:

  • Caters up to 6 plants only
  • Creates more bothering noises than other options when operated

8. Hellogrower 20″ Stealth LED Grow Box with Hydroponic System

This indoor marijuana grow box made by Hellogrower is one of the best marijuana grow closet options for people who need a stealthy operation. It comes with everything you need – you will just need to purchase the seeds.

Although you can only grow two marijuana plants hydroponically with this device, it comes with two separate fans – ones for exhaust and the other is to draw in the fresh air. You also get a 150 watt LED light, which is low on power consumption to help save you money.

This grow box even comes with a timer to help control lighting, along with a carbon filtration system to keep smells out. It’s simple and easy to use, with the hydroponic system directly supplying nutrient-enriched water to the roots of the plant.

What We Liked:

  • Carbon filter system eliminates most odors
  • Discreet shipping available
  • Everything is already prepared for you to start growing, including a 100% mylar interior

What We Didn’t Like:

  • No warranty available

9. TopoGrow LED Grow Tent Complete Kit

Many different characteristics distinguish TopoGrow Tent apart from other plant boxes. One of its notable features is the fan and filter combo, which is made from a mixture of the thick carbon layer and zinc-anodized steel mesh. Hence, this unit enables you to achieve 100% filtered airflow in the ventilation system securing its spot as one of the best marijuana grow boxes.

The unit is equipped with a smart system that absorbs any unwanted odor inside the tent, making itself more discreet for regular gardeners. The tent is said to be sturdy since it is made from heavy-duty materials such as highly reflective waterproof diamond Mylar, 600D lightproof oxford cloth, massive, heavy-duty zippers, and comes with double stitching for leaks protection.

On top of that, this tent comes with a “full spectrum” design, allowing gardeners to grow plants at any point from the germination period. Partnered with a durable grow tent and exterior shell, this weed grow box is genuinely magnificent.

What We Liked:

  • Excellent ventilation system
  • Comes with a leak protection unit
  • Convertible light height

What We Didn’t Like

  • Can hold only specific plant types

10. CoolGrows 2x2x4 Small Indoor Mylar Hydroponics Grow Tent

There are many things to enjoy with CoolGrows mylar hydroponic grow tent. If you are looking for the best marijuana grow box to grow your weeds, this plant tent will inevitably never fail to meet your expectations.

When you go inside the tent, you will notice that the materials are very durable, including built-in heavy-duty metal rods and connectors. With this kind of set up, the grow tent can last for many years and witness your plants’ growth cycles. It comes with a transparent observation window to closely monitor the plants without going in and out of the tent.

Furthermore, this tent also helps spread out light using its reflective interior, speaking of the interior; it is 99% reflective, which prevents white light from escaping.

What We Liked:

  • Reflective interior
  • Transparent observation window
  • Made from durable materials

What We Didn’t Like:

  • A limited number of plants to grow

How Does a Grow Box Work?

If you’re interested in growing marijuana in a grow box, it will help you to first know exactly how it works. A grow cabinet produces an environment that is quite similar to the effects produced by Mother Nature – however, you will have more control over the light, humidity, and other factors, since everything will be enclosed in one tiny box.

These devices allow you to control every aspect of growing weed, from the ventilation to the light and the water. You won’t have to rely on the weather (or even the strength of your own memory!) in order to produce a healthy environment for your plants. You also don’t need to worry about bugs or diseases.

An indoor marijuana grow box is not only effective at producing high, healthy yields of marijuana, but it’s also small and discreet. Nobody will be able to spy on you or wonder what you are growing. You can often leave them for weeks at a time without having to do anything at all. Long story short, marijuana grow box is a smart investment, even for someone who is just starting out with growing weed.

Benefits of Using a Grow Box

There are many advantages to using a hidden grow box. Not only does one of these all-in-one grow boxes help to hide your growing operation, but it can perform several other vital functions, too.

A weed incubator is generally equipped with everything to help you get started. Although not as all-inclusive as one of the best marijuana grow tent kits, a grow cabinet will usually come with high-quality LED grow lights, filters and fans for improved airflow and ventilation, and reflective interiors that will distribute light to all of your plants.

The best single plant grow boxes will also give you other features, too. You might get one that has timers, pumps, pH adjusters to accommodate poor soil pH, nutrients, and more. You might even get potting soil included with your grow box! Most grow boxes provide ample light during all growing conditions, including the vegetative and flowering state, along with locking capabilities to protect your automated grow box from prying eyes.

The best grow cabinet will also be highly adaptable. You will be able to adjust everything from the lighting to the humidity, temperature, and ventilation. Some even allow for changes in your watering schedule. An enclosed grow cabinet will help you produce the best indoor weed possible because you will be in charge of every aspect of your growing environment. You can grow clones, seedlings, and even mature plants inside a weed incubator, and you can even produce soil or hydroponic crops like vegetables and herbs, too.

One of these units doesn’t have to be a small grow box to be compact, either. Grow tents are frequently used by indoor growers, but these can be bulkier and will take up significantly more room than a small grow cabinet. These tend to be only a couple feet tall and are quite narrow, which means you can save space and fit them into any indoor grow setting. They can be used in closes, bedrooms, apartments, garages, or anywhere else you have space to set one up. They’re lightweight and portable, with most taking only a few minutes to set up – so it won’t be a pain to change things around, either.

As we already mentioned, a hidden marijuana grow box will also be more discreet than its grow tent cousin. You won’t have to worry about your neighbors wondering what you have in your massive grow tent. A smell-proof grow cabinet will eliminate marijuana odors and it will look just like a file cabinet, storage locker, or dormitory refrigerator. Many of these require a key or code to open, giving you an additional level of protection. You won’t have to worry about anyone wondering what you are growing, because a grow box doesn’t even look like it could be growing anything.

Grow boxes have substantial odor control, which is helpful when you are growing marijuana. These are usually equipped with charcoal or carbon filters that will divert and disguise the smell of growing weed. Your room can remain free of odors!

And you don’t have to compromise the removal of odors for the quality of your crop, either. Grow cabinets produce some of the best yields and highest-quality weed. You won’t have to monitor or maintain anything – everything inside your grow box will handle all the work. You can grow weed year-round without having to worry about the climate, diseases, or any pests.

Finally, a good grow cabinet doesn’t have to be expensive. While these tend to come at higher prices than your standard grow tent, there’s a serious bargain here – remember, a good grow box is going to come with all of the components you need to get started, including your LED grow lights, filters, fans, and even your growing media. You won’t have to purchase these items separately, which can save you some time, money, and stress when you leave items out that you didn’t know you actually needed. You’ll get your money’s worth out of one of these economical units!

Recap

Hopefully, we have told you all the basic knowledge with our growing box reviews. Whether you are a unique hydroponics grower or prefer a more traditional style of growing weed, stealth grow box can help you meet your growing goals. You’ll have fantastic yields with marijuana grow box, and the best grow box on the market will make your job a lot easier – and a lot more discreet, too.

Are you thinking about growing and cultivating your own marijuana indoors? Make things more discreet by using these best marijuana grow boxes. ]]>