GE Lucalox 600W HPS Bulb – Grow Lamp for Flowering, E40

Genuine GE Lucalox Output for Serious Flowering Rooms

The GE Lucalox 600W HPS Bulb is General Electric's high pressure sodium lamp, built for growers who want a proven, high-lumen bulb behind their reflector rather than an unbranded alternative. It runs on a standard E40 (mogul) base in any 600W HPS ballast and reflector, giving an efficient orange-red spectrum that pushes hard into flowering.

Key Benefits

• 88,000 lumens — strong output for a 600W HPS bulb
• 146 lm/W efficacy — more usable light per watt of electricity
• 1020 µmol/s PPF — measured photosynthetic light output, not just a lumens claim
• 2100K colour temperature — the deep orange-red spectrum flowering plants respond to
• L90 at 18,000 hours — 90% of the light output is still there at 18,000 hours

A tired or unbranded HPS bulb loses output gradually, so a flowering room can end up running under noticeably less light than the grower thinks, with no visible sign until yields fall. Fitting a bulb with a published lumen, efficacy and PPF rating — and replacing it within its rated life — keeps light levels consistent through the whole flowering cycle instead of tailing off in the final weeks.

How to Use

Fit into any 600W HPS ballast and reflector rated for an E40 base. Allow the bulb to warm up fully before adjusting a dimmable ballast, and avoid touching the glass with bare hands — an oily fingerprint can create a hot spot and shorten bulb life. Output is down to about 90% by 18,000 hours, so replace around then, or sooner if light output visibly drops, to keep flowering performance consistent.