Indoor Sun MH lamps are available with the colour temperature of 4000K and 6000K with the best amount of blue/red spectrum combination. The combination of blue and red spectrum provides the best light for the vegetative stage. The amount of PPF is engineered to the suitable value not to push and stress the plant at the early beginning of plants growth stage. In return, the blue spectrum provides the best condition for the plants growth. Ideal for Superior Veg.