High Pressure Sodium Bulbs
High Pressure Sodium bulbs consist of a clear ceramic arc tube suspended inside a glass bulb. The inner tube contains xenon gas which is ignited and produces an arc of light.. High Pressure Sodium bulbs are available in many sizes, from 35w up to 1000w. 250w, 400w, and 1000w are the most common sizes for indoor gardening.
Advantages of High Pressure Sodium Bulbs
High Pressure Sodium bulbs are extremely efficient, give the best light penetration, and are strong in light spectrums needed for plant growth. They emit red and yellow light while being very low in blue light, which closely imitates the sun in autumn. HPS bulbs are a popular choice among indoor gardeners because they produce more light for less energy than any other type of lighting.
HPS bulbs are the best lights for your plant during the flowering stage of its growth cycle.
Disadvantages of High Pressure Sodium Bulbs
Heat is the main drawback to using High Pressure Sodium bulbs in your indoor garden. This can easily be overcome with good garden design and proper ventilation. Price is only a drawback when compared to fluorescent lights. Most HPS grow lights are more cost-effective than most metal halide lights currently available.
High Pressure Sodium light bulbs should be changed every 24 months to maintain your indoor garden's efficiency.
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