Same principle as the 54 W model, same number of levels, but nearly double the width and exactly double the lighting power. It's the size to choose when you already know you're going to run out of room.

What the width changes in practice: seventy centimetres instead of forty is the difference between one seedling tray per level and two. Over three levels, that's six 10 × 20 trays instead of three. For a spring nursery, that's often the line between “I'm starting a few tomatoes” and “I'm supplying the whole vegetable garden.” The six 18 W bars instead of 9 W also double the intensity, which counts for crops more demanding than plain lettuce.

This model adds a plant stand to the kit, on top of the tent, the waterproof mats and the metal trellises. The shelves are adjustable, which lets you set the lamp-to-plant distance as they grow, and the transparent front door lets you check without opening — so without dropping temperature and humidity at every glance. The tent is high-density Oxford fabric.

• 3-level grow greenhouse with 6 built-in grow lights (108 W total).
• Dimensions: 27.6" W × 13.8" D × 51.1" H (about 70 × 35 × 130 cm).
• 3 adjustable shelves. Transparent front door.
• High-density Oxford fabric tent.
• Package contents: 1 grow tent, 1 plant stand, 3 waterproof mats, 4 metal trellises, 6 × 18 W light bars.
• Suited for: a complete spring nursery, year-round herbs and leafy greens, microgreens in production.