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Covert 3' x 4' Perpetual Harvest Multi-Chamber 315 Watt CMH Grow Tent Kit

Covert 3' x 4' Perpetual Harvest Multi-Chamber 315 Watt CMH Grow Tent Kit


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This indoor grow room is ready for plants!

Suggested Plant Count

4-6 plants in 3 or 5 gallon pots.

Electricity Cost

$13.60 per month on average (click to learn more)

Grow Tent Size

36" x 48" x 71"

Highly Portable

Pack up your grow with ease and move to a new location if necessary.

Quality Parts

Only the highest quality components are included in our packages giving you harvest after harvest, year after year. Each component was selected to work together for optimal performance, increasing efficiency and yield.

Expert Support

Grower to grower support from seed to harvest. Give us a call or shoot us an email if you need help.


Grow 4-6 Plants in Covert 3' x 4' Perpetual Harvest Multi-Chamber Growers Choice CMH Grow Tent Kit

What is Perpetual Harvesting?

The Perpetual Harvest is a technique in which growers utilize multiple grow tents/areas to ensure that there are always plants in both the flowering stage and in the vegetative stage. Perpetual harvesting can benefit both the home grower and the commercial grower. It allows both the ability to look after and control their plants better through each phase of the growing process.

The Covert Mult-Chamber 3' x 4' CMH Grow Tent Kit is a budget-friendly perpetual harvest kit for growers looking to start a new indoor garden with low energy use premium full-spectrum CMH grow light. This low profile CMH fixture is a perfect match for the 36" x 36" x 71" main chamber footprint of this grow tent, and it only pulls 315 watts from the wall, which means your energy bill won't even notice! The full-spectrum 3,100K CMH lamp produces more PAR per watt than HPS and promotes a higher rate of metabolic activity and resin production through the use of UV and Far-red spectra. Simply put, this means your plants will be packed with crystals when they are ready to be harvested. A CMH grow tent kit can help you grow huge plants while saving you money on electricity. It doesn't get much better than that!

The compact 36" x 48" x 71" footprint of this indoor grow room is perfect for 4-6 or more medium plants. All you have to do is add plants, soil, nutrients and you will be ready to start your first cycle!

Why Choose a Perpetual Harvest Tent?

  • Reduced Time Between Harvests
    Growing in a perpetual harvest environment allows for faster harvest turnover. The multi-chamber tent separates the vegetative area from the flowering area, dividing the plant growth time nearly in half. Once the perpetual cycle is running, growers can see harvest times in as little as 8 weeks apart when growing in a single multi-chamber tent.
  • Disaster Recovery/Flexibility
    Even the most experienced growers will have the occasional mishaps. With a perpetual harvest system, there is a continuous supply of plants in the vegetative state. Any mishaps in the flowering chamber can be quickly replaced with a new, freshly vegged plant.
  • Never Run Out of Product
    Once the perpetual cycle is going, growers will be able to harvest in nearly half the time. Twice as many harvests has the potential to yield nearly twice as much product.
  • Reduce Workload
    The workload is spread out more evenly over time. You won’t have to hire a bunch of trimmers for the fall harvest when everyone else is looking for them.

Multiple Chambers

  • The included shelf in the smaller veg chamber allows you to have seedlings or clones as well as plants in early veg right above it maximizing space and efficiency.
  • Removable shelf is great for growers wanting to use the veg chamber to get their plants larger before moving into the flower chamber.
  • Interior chamber divider can be easily removed creating one large chamber if needed.

This Perpetual Harvest Grow Tent Kit Includes:

  • Covert 3' x 4' x 6' Multi-Chamber Grow Tent
  • Grower's Choice 315W CMH All in One Fixture with 3,100K Bulb
  • 4" Inline Exhaust Fan
  • 4" Carbon Air Filter
  • Fan Speed Controller
  • 4" Ducting with clamps
  • 6" Clip Fan
  • (3x) Light Hangers
  • (2x) Light Timer
  • Thermometer / Hygrometer
  • (2x) SunBlaster T5 HO 21 - 2 ft, 1 Bulb - 6400K (Vegetative Chamber)
  • Vortex Powerfan VTA In-line Fan - 4 inch (Vegetative Chamber)

Everything you need and nothing you dont

We took the guess work out of making these perpetual kits so you can rest assured that your kit has everything you need for a successful grow and bountiful harvest. These products were hand-picked by growers with excellent industry knowledge and experience.

Our base grow tent systems include the main necessary components such as a Grow Tent, CMH Grow Light (with timer and hangers), Ventilation System (with air circulation clip fan), and a Humidity/Temperature Monitor. All other items are available as add-ons, which we breakdown for you lower down in the description.

We encourage anyone interested in add-on products to take a look at the Learning Center articles to be as informed as possible when purchasing add-ons and accessories.

3 x 4 Grow Tent

Included: Covert 3' x 4' x 6' Multi-Chamber Grow Tent

House your entire garden and all of its components in an easy-to-assemble, highly reflective, multi-chamber grow tent. Control the mess and maintain a low profile without the need to build a grow room from scratch. This tent features two stations with three separate growing areas to manage plants in different stages of development while remaining compact for small spaces or areas with little height.

With a removeable chamber divider, this tent can be used for whatever needs your garden requires. Keep the divider in for multiple chambers while perpetual harvest growing or remove the divider to have standard Covert Grow Tent at your disposal.

The solid metal frame has reinforced connections at the corners and will support well over 150 lbs. equipment like grow lights, carbon filters, fans and more! Sturdy 3/4" poles are powder coated for added durability and are easy to assemble with "bulletproof" corner connectors. Thick 600D thread count density exterior is double stitched around all corners and zippers for added strength. Durable all metal zipper made for repetitive use with light proof backing means no light leaks. Diamond texture mylar interior increases reflective surface area and makes sure no precious light is wasted.

Not only will you get an optimal space for your plants to grow, but the grow tent will also serve a double use as a drying tent. Once your plants are ready to harvest, just take down your grow light, cut down your plants, and hang them from the top crossbars. Now your finished plants have a clean place to hand dry before trimming and curing. You can learn more about drying and curing from this great article - Drying & Curing.

To learn more about this grow tent, check out the Covert 3' x 4' Multi-Chamber Grow Tent here.

Included: Grower's Choice 315W CMH All in One Fixture with 3,100K Bulb, 120/240V

Grower’s Choice Horticultural Lighting has introduced their first digital 315 watt ceramic metal halide fixture. It utilizes advanced low frequency square wave technology and high efficiency 315 watt ceramic metal halide grow lamp.

The GC-315 delivers the highest efficiency and closest spectrum to actual sunlight in the commercial horticultural industry. The GC-315 ballast allows the lamps to be operated in the same unit simply by adjusting the dial on the ballast.

The GC Series Digital Ballast automatically adjusts its output frequency to maintain a constant output regardless of input power fluctuations and ageing lamps. This also prevents 'lamp flicker'

For more information and specifications about this CMH light, checkout the product page for the Grower's Choice 315W CMH

NOTE: Included with the grow light are light hanger ratchets and a light timer.

Growers Choice CMH

Included: Ventilation System - the heat, humidity & odor solution.

The ventilation system is a crucial component of your grow tent kit, and will help manage excess temperature, humidity, and odors. Your garden is a living breathing system that needs to take in the fresh air and expel waste air and heat. This is especially important in an enclosed environment like a grow tent. This is why the Covert Ventilations System is a must-have.

To go along with the ventilation kit, we have included a 6" clip fan to help circulate air and “make your plants dance”. Keeping the air circulating in your tent will strengthen stems, keep temperatures and odors to the minimum, and help discourage pest and disease development. If you want to learn more, check out our post on grow room atmosphere and ventilation.

Covert 3x4 ventilation system

Options, Add-Ons, & Enhancements

In this section we will highlight some of the add-ons and accessories that will take your grow to the next level. Every grower wants to get the most out of their harvest knowing what works well for your grow is essential

The are tons of great articles in our Learning Center that will help even the newest of growers to make informed decisions on their purchases. We will try to highlight important articles that may guide you as you peruse the selction of add-ons and accessories.

  • Choose between Soil or Hydroponic growing methods
  • Plant Nutrients & pH Control
  • Grow Tent Air Intake Kit
  • CO2 Enrichment Kit
  • Seedling Starter Kit
  • Garden Scissors

Optional: Choose Your Growing Method - Soil vs. Hydro

Are you loyal to the soil or hyped on hydro?

The first and most important decision you can make is your growing method. Your gardens life begins right here.

This article - Determining Your Grow Method - has a ton of information regarding both grow methods to help inform your decision. If you are new to growing, it is safe to stick with tradition soil and pots until your ready for a harder challenge in Hydroponics.

Both traditional soil and hydroponics have their respective advantages but Hydroponics is appealing for a number of reasons, with the main one being decreased time to harvest, less water used, cleaner growing conditions, and more. This style of growing can be really fun, but it is challenging. There can be a steep learning curve and lots of moving pieces, so if you aren’t willing to dedicate plenty of time and energy to your grow, stick with the lower maintenance option - soil.

Choose your grow method

Optional: Add Accessories & Upgrades

Every great grower should know about the advantages many of these add-on products provide. After all we want to maximise our yield to the best of our abilities.

Whether you need CO2 for boosting growth, kits for cloning and propagation, or just some handy dandy trimming shears, we here at Hydrobuilder can help you find anything you're looking for.

You will need many of these at some point, so why not grab them while you’re here?! If you don't see the accessories you are looking for, don't worry. We have everything you could ever need for your grow tent, so just reach out to us or browse our site for it.

Add accessories

Optional: Add Harvest Supplies

The final step in building your CMH grow tent is adding your harvest supplies. You can grab drying racks, trimming equipment, and even extraction equipment!

Many growers procrastinate on grabbing harvest equipment because it's so far down the road. But, it makes so much more sense to just grab everything you need right now, and then you don’t have to worry about anything down the line!

Are you harvesting on a larger scale? Most of what we have presented in this CMH grow tent kit builder is for hand trimming, but there is a good chance you may want a trimming machine, especially for the larger grow tent sizes.

If that is the case, we have trimming machines for every size grower! We also carry bucking machines, extraction equipment, storage supplies, and much more.

Add harvest supplies
Tech Specs


Weight (lb.)57.21
Length (in.)36
Width (in.)48
Height (in.)71
Prop 65No
Grow Tent Size3ft x 4ft
Lighting TypeCMH - Single Ended
Lighting BrandGrower's Choice
Suggested Plant Count4-6
Exact Dimensions36" x 48" x 71"
Est. Electricity Cost /mo$13.60
Interior MaterialDiamond Textured Mylar
Exterior Material600D Thread Count Canvas
Ducting Ports(5) 7" Ducting Ports
Electrical Ports(4) 3" Electrical Cord Ports
Doors(1) Large Front Door & (1) Large Side Door
Vents(2) 13.5" x 5.5" Mesh Pre-Filter Air Vents
Estimated Life Hours15,000 Hours
Suggested Lighting400 Watts of Equivalent
Exact Watts315 Watts
Voltage120 Volt
UL ListedNo
Warranty1 Year

Covert 3' x 4' Perpetual Harvest Multi-Chamber 315 Watt CMH Grow Tent Kit Videos


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