Metal halide lamps produce light in the white and blue spectrums, while high pressure sodium lamps produce light in the yellow, orange and red spectrums. why would you do that if you really want the best quality bud. Only high-pressure sodium and pulse-start metal halide fixtures have ignitors. These metal halides are highly soluble in water forming the aqueous metal ion and the halide ion. A metal halide bulb will produce around 58 lumens per watt; 14,500 lumens total. Halides are anions of halogens. “High Pressure Sodium Lamps” By Swisstack – Own work (Public Domain) via Commons Wikimedia. Figure 4: High Pressure Sodium Lamps . A typical 250 watt high pressure sodium bulb will produce around 87 lumens per watt; 21,750 lumens total. i know we used metal halide in the engine rooms of my ship because they where actualy WHITE light, and man are those suckers bright. Metal Halide: Metal halide lamps have a high efficiency and color rendition of light. Can You Grow Plants With Only a Heat Lamp? What is High Pressure Sodium     – Definition, High Pressure Sodium Lamp 3. These bulbs, which are mostly used in outdoor settings, offer different amounts of light output and operate in different color spectrums. High Pressure Sodium: High pressure sodium lamps have sodium, mercury, xenon, etc. A metal halide bulb produces about 65-110 lumens of light per watt while a high pressure sodium bulb produces about 96-150 lumens of light per watt. 1. HPS has a red or orange tint and is used primarily in the flowering phase of your plant's life. Later, the high pressure sodium lamp was developed due to the disadvantages of the low pressure sodium lamp. But how did we come up with that product, and how did we make the original decision on what was the proper replacement? The downside of MH bulbs for growing is their relative inefficiency compared to High Pressure Sodium (HPS) bulbs. One of the main issues with metal halide bulbs is that they tend to lose 50% of their light output half way through their typical lifespan. Light intensity is measured in lumens. Since both types of lamp are HID, they are designed to produce generous amounts of light, or lumens. Ionic compounds such as sodium chloride, covalent compounds such as palladium chloride and some coordination compounds are considered as metal halides. HID wall packs have higher initial Lumen ratings than equivalent LED fixtures and feature an internal aluminum reflector to better direct the light outward. These metal halides are often polymeric structures. Both the MH and the HPS are widely used for outdoor lighting. What is the Best Type of HID Light to Grow Stocky Tomato Plants? Therefore, these two elements can bind via an ionic bond. As a general rule of thumb, HID grow lights like Metal Halide (MH) and High Pressure Sodium (HPS) are most suitable for relatively larger grows where there is at least 5 feet (1.5 meters) of height in the grow space, though it’s recommended to use a taller space for the best results.This is because MH/HPS lights have to be kept fairly far from the plants. This means they have the power to generate high yields and a large bud mass in the flowering stage. First off, HID lights last longer than Halogen. And a lot of time, we have a product in mind that works based on past experience. Certain types of light produced by HID bulbs can affect your health. It exists in a crystal structure as shown in the below diagram. High pressure sodium grow lights produce up to 40% more lumens per watt than metal halide lights, and this then leads to much higher yields when marijuana is flowering. High pressure sodium lamps are an improved version of low pressure sodium lamps. A 250 watt metal halide lamp will last from 10,000 to 15,000 hours. Metal Halide: Metal halide lamps are composed of mercury along with some metal halides including metal bromides and metal iodides. The major disadvantage is that it still has a bad color when compared to a metal halide lamp. in my experience sodium lights have always had more of an orange tint. Metal halide vs. high-pressure sodium: An age-old question for cannabis growers. How to Use Lamps to Set the Mood in Your Home, The Advantages & Benefits of LED Lighting. 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. Since we will be talking about High Pressure Sodium (HPS) lights, we will also be talking about Metal Halides, which are a counterpart to it. High pressure sodium lamps help promote flowering in plants. Difference Between Metal Halide and High Pressure Sodium, What is the difference Between Metal Halide and High Pressure Sodium, Difference Between Protonation and Deprotonation, Distinguish Between Binary Acids and Oxyacids, What is the Difference Between Aromatherapy and Swedish Massage, What is the Difference Between Lyocell and Viscose, What is the Difference Between Pine Tree and Christmas Tree, What is the Difference Between Aioli and Mayonnaise, What is the Difference Between Massage Oil and Body Oil, What is the Difference Between Chia and Basil Seeds. Mercury should be kept out of landfills both because it is dangerous and because it is easily recyclable. High Pressure Sodium: The term high pressure sodium describes a form of light that is used mainly in industrial lightening, and is a type of growth light commonly used for indoor gardening. The chemical bond between a metal and a halogen can be either a covalent bond or ionic bond. Let’s start by comparing these two HID lights to the halogen light bulbs. Unlike low pressure sodium lamp, the high pressure sodium lamp has an acceptable color. Some coordination complexes are also considered as metal halides since there are metal ions bonded to halide ions via coordinate covalent bonds. Score: LED 5, Metal Halide 0 LED floodlights vs High Pressure Sodium floodlights Efficiency High Pressure Sodium floodlights come closer to rivalling LED floodlights than halogen and metal halide. MH vs HPS. Metal halides are inorganic compounds composed of a metal ion and a halide ion. These alternatives also have longer average lifespans. High Pressure Sodium: High pressure sodium lamps have a poor color rendering. Because of their numerous advantages, metal halide lamps are used extensively in outdoor applications and in commercial interiors. % of their mercury content, neither type of lamp are HID, they heralded! 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