Hydrofarm T5 4FT Designer Series Fluorescent Grow Lights deliver performance, flexibility and high lumen output in any growing environment. These daisy-chainable systems allow you to choose multiple hanging configurations to meet your garden’s design. They combine German specular aluminum with energy-efficient, high-output T5 bulbs that put out double the light energy of normal T12 fluorescent systems. Available with 4 Lamps, 6 lamps, or 8 Lamps. We mix and match 3000K and 6500K lamps with these 4FT fixtures.