![]() ![]() This coated lamp is used for general plant lighting and for more rapid growth than 4000 Kelvin produces.Ģ100 - 2700 Kelvin: High Pressure Sodium Lamps Used in general plant lighting.ģ700 Kelvin: Softer Metal Halide (coated) Ideal for propagation.īest single light source for plant growth, producing shorter, bushier growth than 3700 Kelvin and colour rendition. ![]() Greatly enhances all round plant growth when used with super high output, high pressure sodium or 3K warm metal halide lamps.Ĥ000 - 4200 Kelvin: Cool White FluorescentsĬan be used to supplement blue lighting. Ideal for the rapid growth phase of plants. High intensity discharge (HID) lamps and fluorescent light sources all have CCT ratings and this indicates how warm or cool the light source is, for instance a lamp with a CCT of 2700 Kelvin is considered warm, 4200 Kelvin is considered neutral and 6000 Kelvin is considered cool. The temperature of light is expressed in degrees Kelvin and is known as the correlated colour temperature or CCT, and relates to actual thermal temperature. The first factor is to choose the colour of light required, whether you need a warm or cool light source. Plant grow lights, what do I need to know?
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