... .4. Our common light ratio :165:60 with the mixture of red , blue , orange ,yellow and white lights , or customized as ... wavelength and color ratio which is most suitable for your plant growth 6. Built-in cooling system (thermostatically controlled fans ) solve ... -264V, no reflector & ballast needed.8. Ideal for all phases of plant growth, and works well with any indoor garden, hydroponics or ...