Mammoth Gavita G1 Grow Tent Unboxing & Setup

Hey everyone—Nate with GrowersHouse here. Today I’m showing off a product I’ve been waiting on for a while: the Mammoth Gavita Grow Tent. What got me interested is that it’s one of the first tents I’ve seen that was designed in concert with a light layout—so the goal is better, more uniform coverage across the canopy inside your grow tent.

Mammoth Grow Tents (Holland) partnered with Gavita (also Holland) to make two setups: a one-light system (G1) and a two-light system (G2). The G1 works with the Gavita DE 1000 watt or the Gavita DE 650 watt units.

Unboxing the Mammoth Gavita G1 Grow Tent

Waterproof catch tray liner

Right away you’ll notice the shiny bottom liner—the catch tray. It’s fully waterproof, and if you have a leak it’ll hold water up to about four inches deep.

Frame, connectors, and included hardware

In the box you get the connectors, the poles (these are aluminum), and the hard connector pieces (high-density plastic). I’ll be honest—these feel really tough. They’re not the kind of plastic parts I’ve seen snap on older tents. You also get straps and hooks for hanging miscellaneous gear from the top (carbon filters, fans, and other equipment), plus the manual and small accessories.

Setup Results: One Person Can Build It

I wanted to see how realistic it is to set this up solo. The whole thing goes together like an erector set—pretty straightforward. I’m 5'7", so I did use a chair to help me reach, since this is an 8-foot-class tent.

Once you get the cross-brackets in place, that’s when the frame really stiffens up and you can feel the rigidity. The “hardest” part is sliding on the outer shell—just takes a bit more time and patience—but it was still only around five minutes for me.

They don’t list a weight rating, but I did hang off the structure and I’m about 145 pounds. It held me without any issue, so based on that real-world test, the ceiling feels like it can handle a substantial load (again—that’s my experience, not an official spec).

Light + Tent Synergy: What Mammoth Claims

Mammoth says the tent-and-reflector design synergy can deliver about 20% more light to your canopy compared to a square tent with the same square footage. The idea is simple: if the shape is designed around fixture spread, you can reduce dead zones and improve uniformity—especially helpful when you’re trying to keep growth consistent across the entire footprint.

And just to be clear on the category here: these Gavita DE fixtures are HID systems, so the tent height and layout are built with that style of high-output lighting in mind.

Ventilation Ports and Safety Notes

The tent includes 10-inch ventilation ports. That’s plenty of capacity—most people may still choose 6-inch or 8-inch ducting depending on heat load and environment, but it’s nice having the extra headroom.

Mammoth also claims their tents are the only ones on the market with an official Class A flammability property test. That’s the first time I’ve heard that specifically called out for tents, and if you’re trying to meet certain state or facility protocols, it could be a meaningful detail.

Dimensions and Build Specs

Mammoth Gavita G1 (one light)

The G1 I’m building here is 3'7" x 5'10" and 7'10" tall.

Mammoth Gavita G2 (two lights)

The G2 (for two DE fixtures) is 5'11" wide x 7'3" long and also 7'10" tall.

Fabric, access, reflectivity, and included accessories

The fabric is 600D—really thick, very comparable to the feel of a Gorilla Grow Tent. Inside reflectivity is rated at 95% mylar effectiveness (pretty standard for premium tents). You also get two doors, three side windows, five carabiners, six hooks, and two straps for hanging gear.

Front port for external controller viewing

One unique feature: there’s a dedicated front port so you can mount the Gavita Master EL1 Controller and view the display from outside the tent. That’s a nice quality-of-life detail if you’re running Gavita controls and want quick visibility without opening the tent.

Key Results and Takeaways for Hydroponic Growers

Overall, this tent is awesome. The biggest takeaway is how sturdy it feels—especially the connectors and the frame rigidity once it’s fully assembled. For hydroponic growers, the real benefits here are practical:

• Potentially improved canopy uniformity: The entire footprint is designed around fixture spread, with Mammoth claiming ~20% more canopy light versus a standard square tent.

• Water containment protection: The waterproof catch tray liner can help prevent small leaks from turning into bigger problems.

• High airflow flexibility: 10-inch ports give you room to scale ventilation depending on heat and environment.

• Built for Gavita workflows: Purpose-built fit for Gavita DE fixtures and a controller display port for the Gavita Master EL1 Controller.

My Fixture Recommendation in the G1

If it were me, I’d personally lean toward the Gavita DE 650 watt unit in this tent over the Gavita DE 1000 watt. I do think the 1000W can work—especially if you keep plants on the ground instead of elevating them on a table—so you’ve got more vertical space to manage intensity and heat.

That’s it for today—Nate from GrowersHouse. If you’ve got questions, give us a call or shoot us an email. Happy growing!