Was Told All US made Glass Has UV Blockers, Bought a system from Solis Tek Digital Lighting, Doubled ended light. Have Two rooms side by side one with large air cooled reflector, other solis tek was told 25% better growth. . Surface leaf temp. up from normal lighting, reading 80+degrees with room at 75 degrees. removed the glass in air cooled reflector and leaf temp rose 5+ degrees. Well Pleased with my way over budget priced lamp. Thanks
