Stealth Hydro Dual Spectrum High Output Fluorescent Lighting Kit The dual spectrum 42 lighting system provides a monsterous 5400 lumens which supports both vegetative growth and flowering phases. At Stealth Hydro, we do as the name says, and stealth means low heat. Our lights produce the least amount of heat of any grow light system on the market today. This means you can place these lights into any small corner or stealthy closet without heat troubles that most other lighting systems have. Included are two rugged, fully assembled, completely wired, 8.5 inch rounded parabolic reflectors. No cheap bent, dangerously sharp, Aluminum slates here; just safe, no hassle equipment. Reflectors have EZ-hang loops to make mounting a breeze.