Philips Master GreenPower 600w Bulbs

More usable light per watt for bigger flowering yields

The Philips Master GreenPower 600W is a professional dual-spectrum HPS lamp built to put more of its output into light plants can actually photosynthesise, rather than chasing a headline lumen figure. It runs heavy in the orange/red for powerful flowering, with enough blue retained to keep plants healthy through veg. It comes in a standard 240V version rated at a high 88,000 lumens, and a 400V Pro (EL) version made specifically for 400V Pro HPS systems such as the Gavita Pro 400V/600W kit.

Key Benefits

• Dual-spectrum output for strong flowering with enough blue for healthy vegetative growth
• 88,000 lumens on the 240V version, a high output for a 600W HPS lamp
• More usable PAR (µmol) per watt than raw lumens suggest, so more of the light drives yield
• 400V Pro version produces the most usable light of any 600W lamp for flowering, for the biggest yields
• Built to professional standards, holding output longer and lasting up to a year between change-outs

Why does a lower lumen rating still mean better flowering?

Lumens measure total light output, not the usable light a plant can photosynthesise. The Master GreenPower may read lower on lumens than some rival 600W lamps, but it converts more of its output into plant-usable PAR and holds that output longer before it needs replacing, which is what actually drives flowering yield.

How to Use

• 240V version: fit in any standard 600W HPS ballast for flowering, or through veg for a fuller spectrum
• 400V Pro version: use only in a dedicated 400V Pro HPS system (e.g. Gavita Pro 400V/600W) — never run it on a standard 240V ballast
• Replace either lamp once output begins to drop, typically after around a year of regular use