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Product sheet
G-PRO Diamond 300x300x220 — XL Grow Tent 25mm Poles Mylar 600D — BloomLED
€769.00
Tax included
Shipping within 2 to 3 weeks
The pro-grade tent for XL indoor cultivation — 9 sqm — A 300x300x220 cm grow room with reinforced 25 mm steel poles and 600D Diamond Mylar fabric, engineered to host multiple high-power LED grow lights and serious production cycles.
Trust: hand-picked by BloomLED, indoor-cultivation specialist for 10+ years, designed in France.
300x300x220 cm · 25 mm steel poles · 600D Mylar · 50 kg load · 8 vent ports
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XL GROW TENT
G-PRO Diamond 300x300x220 — The XL Reference for Serious Indoor Growers
With 9 sqm of floor area and 2.20 m of height, the G-PRO Diamond 300x300x220 is the grow tent for advanced cultivators ready to scale up. Reinforced 25 mm steel poles, Mylar Diamond 600D liner, total light-tightness, and 8 ventilation ports: everything is engineered to orchestrate a demanding indoor production environment — multi-spot LED lighting, powerful extraction, heavy carbon filters. Curated by the BloomLED experts, it's a long-term investment for passionate growers and semi-pros.
Technical specifications
| Feature | Value |
|---|---|
| External dimensions | 3000 x 3000 x 2200 mm (W x D x H) |
| Floor area | 9.0 sqm |
| Frame | Reinforced steel poles Ø 25 mm + metal connectors |
| Inner liner | Mylar Diamond 600D — reflectivity > 95% |
| Light-tightness | 100% — double stitching and sealed socks |
| Openings | 2 side doors + 1 front door with viewing window |
| Exhaust | 2 x Ø 254 mm (10") |
| Passive intake | 2 x Ø 304 mm (12") |
| Cool tube ports | 2 x Ø 204 mm (8") |
| Cable passes | 2 x Ø 102 mm with sealed socks |
| Top-bar max load | 50 kg |
| Growing methods | Soil, coco, hydroponics, aeroponics |
9 sqmFloor area
25 mmReinforced steel
600DMylar Diamond
50 kgMax load
Why pick the G-PRO Diamond 300x300x220?
🛠️ Reinforced 25 mm pole frame
Where entry-level tents rely on 16 or 22 mm poles, the G-PRO Diamond uses 25 mm-diameter steel. The practical result: 50 kg of load on the top bars — so multiple 600 W LED lights + an AC fan + a carbon filter, with no flex.
💎 600D Mylar Diamond liner
The high-density 600D fabric with a Mylar Diamond finish bounces over 95% of your LED output back onto the canopy. Concretely: a higher and more even PPFD, no dark spots across a large footprint.
🌬️ Pro ventilation: 8 ports
Two 254 mm exhaust ports, two 304 mm intakes, two 204 mm cool-tube ports, two 102 mm cable passes. You manage the climate of a 19.8 m³ volume without compromise: redundant extraction, generous passive intake, and HPS cool-tube support when needed.
🚪 3 doors for big footprints
A main front door with a viewing window for daily check-ups, plus 2 side doors to reach the back rows without disturbing the front. Essential when you're working on 9 sqm of canopy.
🛡️ 100% light-tight build
Double-stitched seams, reinforced zippers, and sealed socks on every vent and cable pass. Your 12/12 flowering schedules are respected down to the second — no parasitic light leak to stress the plants.
🌱 All cultivation methods
Soil, coco coir, NFT or DWC hydroponics, aeroponics: the G-PRO Diamond doesn't dictate your method. Install tables, pots, trays or complex systems as you wish, with room to move around.
The reference choice for serious growers. If you're stepping up from a 1.2 m or 1.5 m tent to a multi-light XL production, this is the robust, light-tight, well-ventilated option that will keep you from buying it all again in 2 years. Hand-picked by BloomLED, the indoor LED lighting and grow-tent expert for 10+ years.
Frequently asked questions
What LED wattage should I install in a G-PRO Diamond 300x300x220?
For a 9 sqm canopy, plan around 800 to 1000 W of quality horticultural LED (efficiency ≥ 2.7 µmol/J) to reach an even PPFD of about 800–1000 µmol/m²/s in flowering. In practice, this often means 4 spots of 240 W or 2 LED bars of 480 W. The BloomLED team can help you size it precisely for your crop.
How much extraction power do I need for this tent?The volume is 19.8 m³. The rule is to renew the air every 1 to 3 minutes — so a 600 to 1200 m³/h extractor depending on your thermal load. The 2 x 254 mm ports let you install a main extractor plus a backup, or a dual system to lower noise.
How long does assembly take?Plan 45 to 75 minutes for the first build with two people. The 25 mm pole frame is stiffer than entry-level tents, so it takes a bit more force but stays accessible. No specific tooling required — a flat floor is enough. An illustrated manual is included.
Can I run hydroponics or DWC inside?Yes, absolutely. The inner liner is waterproof, the floor is protected by a plastic spill tray. You can install a DWC, NFT, ebb & flow or aeroponic system. Plan a low point to drain in case of overflow, and use the Ø 102 mm cable passes to route tubing and pump power.
How is this different from the smaller G-PRO Diamond models?The 80x80, 100x100, 120x120 models use 22 mm poles — suitable for small setups. From 200x200 cm upwards (and especially this 300x300), the frame switches to reinforced 25 mm poles with a 50 kg max load, essential to support multiple LED spots, a heavy AC fan and a large carbon filter. All share the same 600D Mylar Diamond liner.
✓ Curated by BloomLED
✓ Indoor expert 10+ years
✓ Technical advice included
✓ EU-wide delivery
BOX-G-PRO+-300-300-220
New
The pro-grade tent for XL indoor cultivation — 9 sqm — A 300x300x220 cm grow room with reinforced 25 mm steel poles and 600D Diamond Mylar fabric, engineered to host multiple high-power LED grow lights and serious production cycles.
Trust: hand-picked by BloomLED, indoor-cultivation specialist for 10+ years, designed in France.
300x300x220 cm · 25 mm steel poles · 600D Mylar · 50 kg load · 8 vent ports