- All metal halide bulbs produce a beautiful shimmering light.
- The Kelvin (K) value of a MH bulb describes the color of the light the bulb produces.
- Bulbs with a higher K value emit more blue than bulbs with a lower K value.
- 20K bulbs are often used alone without additional actinic light.
An electronic ballast, magnetic pulse-start ballast or magnetic HQI ballast is required to ignite this bulb. This bulb is white with a blue tint on a magnetic HQI ballast. It will burn more blue on an electronic ballast or pulse-start ballast. An great choice for reef tanks up to 24" deep.