The Effects Master VHO from Wildfire is the most powerful? fluorescent black light? on the market, featuring proprietary, high output electronic ballasting and polished Everbrite reflectors. This four-lamp powerhouse produces up to an incredible 2,280 ?W/cm 2 of true 365nm black light. These fluorescent black light? fixtures can flood an entire warehouse with black light – which is exactly what they were designed for.