HOMEbox Ambient R300+ Grow Tent 300x150x220cm | Large High-Yield Indoor Grow Room

HOMEbox Ambient R300+ Grow Tent: Large-Scale Controlled Environment System

The HOMEbox Ambient R300+ is a high-capacity indoor grow tent engineered for large-scale plant production under controlled environmental conditions. With an expansive footprint of 300 x 150 x 220cm and a total grow area of 4.5m², it's built for high-density cultivation and serious yield output across multiple lights.

The enclosure supports high-intensity lighting systems while maintaining stable temperature, humidity, and airflow. A multi-port ventilation system enables complex air management configurations, letting growers manage air exchange rates, thermal dissipation, and CO₂ distribution across the canopy.

The structural frame uses 22mm powder-coated steel poles with reinforced connectors, rated to 150kg. This holds up under the combined weight of multiple lighting fixtures, carbon filtration systems, and ducting infrastructure without flex.

Total-blackout zippers create a fully light-proof seal without relying on flaps or velcro closures, for strict photoperiod control. A removable, water-resistant floor liner simplifies cleaning and maintenance in a high-output grow environment.

Key Benefits

• Large canopy coverage. 4.5m² grow area for high-density cultivation across multiple lights.
• Multi-light support. Engineered for multiple 600W to 1000W HID and high-output LED systems simultaneously.
• Advanced ventilation layout. Multi-port ducting configuration for precise climate control, CO₂ management, and thermal dissipation.
• Heavy-duty frame. 22mm powder-coated steel poles with reinforced connectors, rated to 150kg.
• Light-proof enclosure. Total-blackout zippers for strict photoperiod control.
• Dual side access windows. Left and right access panels for plant handling and maintenance.

Technical Specifications

• Dimensions: 300 x 150 x 220cm
• Grow Area: 4.5m²
• Frame: 22mm powder-coated steel poles with reinforced connectors
• Load Capacity: Up to 150kg
• Outer Material: Heavy-duty, plant-safe canvas
• Flooring: Removable, water-resistant liner

Ventilation and Ducting Configuration

• 100mm (4") ports: 6 total
• 250mm (10") ports: 4 total
• 350mm (14") ports: 4 total
• Integrated drawstring closures for airtight sealing
• 700-micron MicroMesh insect screens on all openings

Access and Usability

• Dual side access windows, left and right
• Streamlined access for maintenance and plant handling
• Fully sealed environment when closed

Lighting Compatibility

• Multiple 600W to 1000W HID grow lights
• High-output LED grow lighting systems
• Commercial-scale indoor grow lighting setups

Suited To

The R300+ is built for professional growers and advanced hobbyists running commercial or near-commercial scale operations, multi-light flowering rooms, and growers who've outgrown a single 240cm tent and need genuine large-format capacity in one enclosure rather than running two smaller tents side by side.

Product Details

• Type: Large-Scale Indoor Grow Tent
• Dimensions: 300 x 150 x 220cm
• Best For: High-yield cultivation, multi-light setups, commercial indoor growing
• Compatible Lighting: 600W to 1000W HID, high-output LED
• Frame: 22mm powder-coated steel

Frequently Asked Questions

What size grow tent do I need?

The HOMEbox Ambient R300+ gives you 4.5m² of growing space at 300x150cm, the largest footprint in the HOMEbox range we stock. As a general guide, a 60x60cm tent suits 1 to 2 plants, 120x120cm suits 4 to 6 plants, and a 300x150cm footprint like this one is built for commercial-scale or multi-light flowering rooms running well beyond a single-light setup.

Is the R300+ compatible with my grow light and fan?

The R300+ features multiple large-diameter ducting ports (100mm, 250mm, and 350mm) to fit serious extraction setups and carbon filtration at scale. It's compatible with multiple HID fixtures and high-output LED systems. Check your lighting layout's total footprint against the tent's internal dimensions before purchasing.

How difficult is the R300+ to assemble?

The R300+ includes a full steel frame with reinforced connectors and a full-coverage zip-on canvas. Given the scale of this tent, most growers allow 45 to 60 minutes for assembly, ideally with a second person to help with the larger frame sections.

How do I clean and maintain the R300+?

Wipe down the interior reflective lining with a damp cloth between grows. Zip openings can be lubricated with a small amount of beeswax or candle wax if they become stiff. Avoid harsh chemicals on the reflective lining. Store folded when not in use to extend the fabric's lifespan.

Does the R300+ ship fast within Australia?

Yes, the R300+ ships from our Australian warehouse with fast tracked delivery to all states and territories. Given the size of this tent, freight quotes may apply to some regions, email hello@apexgrow.com.au with your postcode if you'd like this confirmed before ordering.