T5 HO Grow Light - 2 FT 6 Lamps - DL826S Fluorescent Hydroponic Fixture Bloom Veg Daisy Chain with Bulbs 15000 lumens powerful grow system 95% Reflective German hammertone reflectors. 30% more light than comparable light systems Outlet on Fixture - Daisy chain up to 7 fixtures - less clutter, more convenience 1 On/off switch controls inner 2 bulbs. 1 on/off switch controls outer 4 bulbs Fixture is UL/CUL listed