EYE Hortilux Super HPS 400W is a single-ended high-pressure sodium grow lamp for flowering rooms. The Enhanced Spectrum Super HPS arc tube emphasizes red-orange output while adding extra blue/green compared to standard HPS. Model LU400S/HTL/EN runs on ANSI S51 400 W ballasts, uses a Mogul (E39) base, and supports universal burning position. It produces about 55,000 initial lumens at a warm 2100 K and is rated for up to 24,000 hours of service. The lamp is open-rated and compatible with many electronic ballasts. In practice, a 400 W HPS suits roughly a 1 × 1 m (≈3.3 × 3.3 ft) flowering footprint when paired with an appropriate reflector and hanging height.
