Refugiums are a very popular method for nutrient export and while most of us use a less energy efficient lighting the Macro Glo refgium light would love to reside down in your refuge. The light is 5x the brightness of a traditional incandescent lamp, lasting up to 8000 hours and producing less heat to boot. The light comes in either 15 ($39.99) and 25 ($49.99) watt versions with a convenient 360 degree turning radius that allows your refugium to get optimal lighting. Clamps make it easy to attach to your refugium and these have now begun to ship from retailers.
