CMH PGZX18 315w 3000K

Cultilite’s CMH PGZX18 315w 3000K is a single‑ended ceramic metal halide grow lamp designed for flowering and general‑purpose cultivation. The official spec lists 315 W operating wattage, 3.2 A lamp current, 97.5 lm/W efficacy and 30,100 lm luminous flux, with a PGZX18 base and power factor 0.991. The 3000 K spectrum emphasizes red output and the lamp delivers a photosynthetic photon flux of about 520 µmol/s. When paired with an appropriate 315 W CMH reflector or fixture, this wattage class typically services around a 3×3 ft (≈90×90 cm) canopy. CMH technology features a ceramic arc tube for stable output and a stated service life up to 20,000 hours, offering strong spectral quality with some UV and far‑red components.