Grow It Yourself hydroponic HPS and Metal Halide grow lighting kits are assembled by us in-house using only the very best high quality products. All our kits are selected to work together perfectly without fuss. We supply both HPS and Metal Halide Kits to suit every grower. 400 watt HID (high Intensity Discharge) kits will light a 1m x 1m area very efficiently. 600 watt HID grow lights are great for lighting an area 1.2m x 1.2m while 1000 watt HID kits can light an indoor garden place up to 1.5m x 1.5m.