Hydroponic Grow Light Selection: Match Spectrum to Crop Goals

HID (High-Intensity Discharge) lighting makes year-round indoor harvests possible—10× incandescent efficiency, plant-preferred spectra.

Two Primary Spectra, Two Growth Phases

• Metal Halide (MH) – Blue-heavy: Vegetative growth. Compact, bushy, strong stems.
• High-Pressure Sodium (HPS) – Red-heavy: Flowering/fruiting. Triggers bloom, maximizes yield.

Conversion Systems: Best of Both

Switchable ballasts + conversion bulbs let you start with MH (tight structure), flip to HPS (explosive bloom). Convertible ballasts now accept standard MH/HPS bulbs—flexibility without fixture changes.

Why HID Dominates

• Total control: intensity, spectrum, photoperiod
• Force bloom off-season
• Year-round supply: flowers, vegetables, herbs
• Commercial growers worldwide standard

Next-Gen Blue-Enhanced MH

Latest "blue-burning" MH lamps simulate natural sun more closely—shorter, bushier plants, healthier roots, superior to standard MH/HPS combos.

Light is the limiting factor. Master spectrum, intensity, duration; master the harvest.