A hundred watts, like the SF1000, but a different lamp on two points that matter: it states its coverage separately for growth and for flowering, and its spectrum includes infrared.

Why two coverage figures: 3' × 3' in veg, 2' × 2' in flower. That isn't a contradiction, it's the reality of every grow light, and the SF1000D has the merit of writing it down. A plant making leaves gets by on far less light than a plant filling fruit or flowers. The same lamp therefore covers a wider surface while you're in growth, and tightens as soon as you ask for production. If you're starting seedlings or growing lettuces and herbs, keep the big number; if you're carrying fruiting plants, keep the small one.

The spectrum: 660-665 nm is deep red, chlorophyll's absorption peak. 3000 K is a warm white, 5000 K a cool white rich in blue that keeps plants stocky. And IR, infrared, acts on stem elongation and on day-night cycle signalling — an addition entry-level panels generally don't have. The diodes are Samsung LM301B 210, a safe bet in the sector.

In our tent range, it suits the 90 × 90 cm tent (about 3' × 3') for foliage, or a more concentrated fruiting crop in the same space.

• Full-spectrum Samsung LM301B 210 diodes.
• Covers 3' × 3' in veg or 2' × 2' in flower.
• Power consumption: 100 W.
• Spectrum: 660-665 nm, 3000 K, 5000 K and IR.
• Suited for: a small tent, seedlings and foliage over 3' × 3', fruiting production over 2' × 2'.