Single-ended or double-ended for HPS/MH ?
High-Intensity Discharge (HID) grow lights provide a cost-efficient light source for indoor gardening. Using very intense light, the watt to lumen ratio for HID lighting is among the highest for all types of lighting. HID lights also pump out a lot of heat and may need to be cooled. HID bulbs must be replaced often to ensure optimal spectrums are maintained, typically bulbs last 9 months to 1 year. HID lighting comes in many different wattages to accommodate different garden needs. The total wattage of a HID lighting system determines its intensity and the number and quality of the plants that it can grow. The more watts, the more intense the light. Two types of HID grow lights can be used for indoor gardening – High-Pressure Sodium (HPS) and Metal Halide (MH). The primary visual difference between them is that metal halide light is white and the light emitted from a High-Pressure Sodium bulb is amber orange. These bulbs cannot be interchanged without changing their balla...