Mammoth Grow Tent XXL 300x300x200cm – 9m² Professional Indoor Grow Room

If you are done playing in the minor leagues and are ready to set up a truly professional operation, the Mammoth Grow Tent XXL 300x300x200cm is exactly the beast you need to tame. We are talking about a massive structure designed to turn any room into a high-yield biological factory, offering you total control over the environment without the need for construction work.

Is your current setup limiting your potential?

Let's be honest: trying to squeeze a high-production crop into a small tent or adapting a spare room with plastic sheets is a nightmare. You run out of vertical space, the humidity spikes uncontrollably because you can't seal the area, and you can't hang that heavy-duty LED system you've been eyeing because the structure just won't hold it.

This lack of professional infrastructure leads to wasted light, stressed plants due to light leaks, and ultimately, a harvest that is far below what your skills could actually achieve. There is nothing more frustrating than seeing your potential grams disappear because your environment isn't up to par with your genetics.

The Mammoth XXL solves all of this in one go. It gives you 9 square meters of perfectly isolated growing space, with a structure that laughs at heavy equipment and a reflective interior that squeezes every last photon out of your lamps. It is the logical leap from "hobbyist" to "master grower."

Why this product improves what you already have

Compared to standard tents or DIY room conversions, the Mammoth XXL offers superior stability and climate control. While cheaper tents use thin fabrics that tear or leak light, this unit utilizes 100% opaque material. This means you can have the lights on inside at full blast while the room outside remains pitch black, keeping your operation discreet and your photoperiods safe.

Furthermore, the internal efficiency is unmatched. The interior is lined with Mylar 600D, a high-tech material with a 95% reflection rating. Instead of your expensive lumens being absorbed by the walls, they are bounced back directly onto your canopy. This translates to denser buds on the lower branches and a significantly higher overall yield per watt used.

Key features you’ll notice from the very first grow

• Massive Dimensions: At 300x300x200cm, you have ample room to move around your plants, making watering and maintenance a breeze.
• Heavy-Duty Frame: The 16mm steel poles are robust and can support up to 75kg of equipment. You can hang heavy carbon filters and multiple Grow lights without fear of collapse.
• Superior Reflection: The 600D Mylar lining ensures that light distribution is uniform, reducing hot spots and maximizing photosynthesis.
• Total Opacity: The external fabric and high-quality zippers prevent light leaks, protecting your plants from stress during their dark cycle.
• Easy Assembly: Despite its size, the click-system frame allows for quick assembly without the need for tools.
• Optimized Ventilation: Multiple socks and windows allow you to set up a complex Air Extraction System to keep temperature and humidity perfect.

Who this product is especially interesting for

The Mammoth XXL isn't for the casual window-sill grower; it's a powerhouse for those who mean business.

• Commercial-style growers: If you need to maximize production per square meter efficiently.
• Cannabis Associations: Perfect for maintaining a steady supply of mother plants or a large flowering room.
• Hydroponic enthusiasts: The floor space is ideal for setting up extensive Hydroponic and Aeroponic Systems with large reservoirs.
• Growers valuing durability: If you are tired of replacing cheap tents every couple of years, this is a long-term investment.

How to integrate it into your routine without overcomplicating things

Setting up a tent of this size might seem daunting, but it actually simplifies your routine. Because you have so much space, you can organize your pots with walkways in between, meaning you don't have to drag plants out to water the ones in the back. This reduces the risk of pests and physical damage to the plants.

To get the most out of it, ensure you pair it with a proper Climate Control system. In a 9m² space, air circulation is key. Use the multiple extraction ports to create a negative pressure environment, ensuring that no odors escape and fresh CO2 is always available for your girls.

Frequently Asked Questions

How many plants can I fit in this 300x300cm tent?

It depends on your technique. If you are doing a Sea of Green (SOG), you could fit up to 100 small plants. for larger bushes in 11-18L pots, you can comfortably fit around 36 to 49 plants, leaving room for airflow.

What lighting do I need for this space?

To cover 9m² effectively, you would typically need about 4 to 6 units of 600W HPS or their equivalent in high-efficiency LED fixtures to ensure every corner gets enough intensity for flowering.

Is the floor waterproof?

Yes, the Mammoth XXL comes with a removable water tray liner. This protects your room's floor from spills and makes cleaning up runoff water much easier.

Is it difficult to assemble alone?

Due to its height and size, we recommend assembling it with a friend. It is possible to do it alone, but having an extra pair of hands makes fitting the canvas over the frame much smoother.

Personal Experience of Pevgrow’s CEO (Alan)

I remember when I made the switch from multiple small tents to one large Mammoth XXL. The difference in workflow was night and day. Before, I was running around checking different timers and environments; with this tent, I centralized everything. The stability of the temperature in a larger volume of air is much better, meaning my plants suffered less stress from fluctuations.

What I love most is the frame strength. I like to use heavy industrial filters to be 100% safe with odors, and this tent holds them up without even creaking. If you have the space for it, this is the best upgrade you can make for your indoor garden. It feels less like a tent and more like a professional laboratory.