CMH grow light lamps are a relatively new source of HID light that is a variation of the traditional Metal Halide HID lamp. These metal halides improve the efficiency and color rendition of the light. High Pressure Sodium: High pressure sodium lamps have sodium, mercury, xenon, etc. High Pressure Sodium Grow Lights vs Metal Halide Grow Lights The article below will explain the differences between High Pressure sodium Grow Lights and Metal Halide Grow Lights. Metal halide lamps and high pressure sodium (HPS) bulbs fall into this category. How to Use Lamps to Set the Mood in Your Home, The Advantages & Benefits of LED Lighting. Metal halides are used in metal halide lamps. Halogens can accept electrons to their outermost electron shell. Ionic compounds such as sodium chloride, covalent compounds such as palladium chloride and some coordination compounds are considered as metal halides. Show Printable Version; 09-04-2011, 07:31 AM #1. A metal halide bulb will produce around 58 lumens per watt; 14,500 lumens total. High pressure sodium lamps last longer than metal halide; they also produce more lumens per watt. Both high pressure sodium and metal halide lamps are considered HID (high intensity discharge). “Alpha-palladium(II)-chloride-xtal-3D-balls” By CCoil (talk) – Own work (CC BY 3.0) via Commons Wikimedia 3. Her interest areas for writing and research include Biochemistry and Environmental Chemistry. Unlike low pressure sodium lamp, the high pressure sodium lamp has an acceptable color. Therefore, these two elements can bind via an ionic bond. by Garrett Rudolph August 1, 2014. written by Greg James August 1, 2014. They are heralded because of the quality of light they produce. This structure has infinite chains of palladium chloride units. Metal Halide: Metal halides are used in metal halide lamps along with mercury. have you thought about using LED lights for spreader lights, there are some pretty great options out there now a days. its the same low pressure soduims came out back in the 40 with street lights and hps came out in the 60 for street lights is light tuning up a honda. 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. A 250 watt high pressure sodium lamp can last from 12,000 to 24,000 hours. This light can stimulate the growth of plants. The chemical bond between a metal and a halogen can be either a covalent bond or ionic bond. Likes: 0. What is High Pressure Sodium     – Definition, High Pressure Sodium Lamp 3. Common metal halide to LED replacements: 2. These compounds are used in metal halide lamps. 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. just my opinions though. What is a Metal Halide     – Definition, Different Types, Metal Halide Lamps 2. Metal halide lamps last about 15,000 hours, and HPS bulbs can last up to 24,000 hours. The low pressure sodium lamp was the first sodium lamp to be developed. why would you do that if you really want the best quality bud. High pressure sodium lamps are an improved version of low pressure sodium lamps. Rick Rowlands. The warmer 3000K light is a great way to simulate 3000K metal halide lamps like the Philips MHC100/U/M/3K or ALL high-pressure sodium lights. Blue light is said to affect hormone levels and slow melatonin production. High pressure sodium lamps help promote flowering in plants. A high pressure sodium bulb produces light that is reddish-yellow, while metal halide bulbs produce a much more balanced white light that has more of the visual spectrum. A standard 250 watt metal halide lamp contains around 38 mg of mercury, a 250 watt high pressure sodium lamp contains around 15 mg. A typical high pressure sodium lamp will last longer than a metal halide lamp of similar wattage. Good efficiency, smaller size than low pressure sodium lamp, better bulb life are some of the advantages. Certain types of light produced by HID bulbs can affect your health. Sodium Lamps: High-pressure sodium sources were developed primarily for their energy efficiency. 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. The main difference between metal halide and high pressure sodium is that metal halide lamps have a high efficiency and color rendition of light whereas high pressure sodium lamps have a poor color rendering. 2.3 Quartz Metal Halide (QMH) Metal Halide lamps have an efficacy of 80-115 lumens per watt and have a life between 10,000-20,000 hours. Madhusha is a BSc (Hons) graduate in the field of Biological Sciences and is currently pursuing for her Masters in Industrial and Environmental Chemistry. Some transition metal halides also dissolve in water. The main difference between metal halide and high pressure sodium is that metal halide lamps have a high efficiency and color rendition of light whereas high pressure sodium lamps have a poor color rendering. HID vs. This type of lamp emits an orange-red glow that is ideal for flowering. High Pressure Sodium: High pressure sodium lamps have a poor color rendering. in my experience sodium lights have always had more of an orange tint. And a lot of time, we have a product in mind that works based on past experience. 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. Halides are anions of halogens. An ionic bond is a type of chemical bond which has an electrostatic attraction between a cation and an anion. Figure 2: Palladium Chloride Polymeric Chain. 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 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. The bulbs in this family produce a large amount of lumens, which is why they’re used for public spaces, like stadiums. Figure 1: Sodium Chloride Crystal Structure. Home » Science » Chemistry » Inorganic Chemistry » Difference Between Metal Halide and High Pressure Sodium. 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. LED Wall Pack Fixtures. HPS light costs differ based on the particular fixtures, but are cheap compared to LEDs. These metal halides are often polymeric structures. A metal halide lamp is an electrical lamp. It produces light by electrical breakdown of a gaseous mixture of vaporized mercury and metal halides. Ionic metal halides are often formed from a combination of halide ions with metal ions of group 1 and group 2 (alkali and alkaline earth) elements. HPS bulbs are 30%+ more efficient than MH bulbs but they only have around 3% blue in the spectrum. Anyone who uses them in any other way either cannot afford what is needed, so they pick one and hope for the best, or they do not know enough about plant needs to post a valid comment. These compounds have high melting and boiling points. What is the Best Type of HID Light to Grow Stocky Tomato Plants? Metal halide bulbs, sometimes shortened to just “MH” and high pressure sodium bulbs, sometimes shortened to simply “HPS”, are in a family called High Intensity Discharge bulbs, or “HID” for short. Thread Tools. Let’s start by comparing these two HID lights to the halogen light bulbs. One, Metal Halide is for the vegetative growth stage and the other, High Pressure Sodium is for the flowering stage.. you use both.. period, the end. This is not the case for high pressure sodium, LED and induction alternatives. The Difficulty in Choosing the Right Grow Light. Mercury should be kept out of landfills both because it is dangerous and because it is easily recyclable. “High Pressure Sodium Lamps” By Swisstack – Own work (Public Domain) via Commons Wikimedia. High pressure sodium lamps contain more components such as mercury which is absent in low pressure sodium lamps. The downside of MH bulbs for growing is their relative inefficiency compared to High Pressure Sodium (HPS) bulbs. Halogens are the elements in the group 7. Metals are the elements in the s block and d block. 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. These metal halides are highly soluble in water forming the aqueous metal ion and the halide ion. Metal halides are inorganic compounds composed of a metal ion and a halide ion. Metal halide and high pressure sodium lamps are typically omni-directional meaning the light is emitted in all directions: top, sides, and bottom. 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. MH vs HPS. vs a stock farrari enzo (sunpulse metal halide) who do you think would win. Some coordination complexes are also considered as metal halides since there are metal ions bonded to halide ions via coordinate covalent bonds. Metal Halide: Metal halide lamps are composed of mercury along with some metal halides including metal bromides and metal iodides. Metal halides are compounds composed of a metal ion chemically bonded to a halide. 1. 1. Only high-pressure sodium and pulse-start metal halide fixtures have ignitors. These alternatives also have longer average lifespans. Because of their numerous advantages, metal halide lamps are used extensively in outdoor applications and in commercial interiors. Metal halides are compounds between metals and halogens. Metal halide lamps promote vegetative growth in plants because they emit a bluish white light ideal for vegetative growth. High pressure sodium lamps are an improved version of low pressure sodium lamps. When I first started growing, I made the mistake of … A 250 watt metal halide lamp will last from 10,000 to 15,000 hours. First off, HID lights last longer than Halogen. 1. Neither mercury vapor nor standard metal halide fixtures need ignitors to strike an arc through the lamp. “Halides | Metal Halides | Uses of Halides | Examples | Chemistry | Byju’s.” Chemistry, Byjus Classes, 18 Sept. 2017,  Available here. “Sodium chloride crystal” By Walkerma – Own work by the original uploader (Public Domain) via Commons Wikimedia 2. Figure 4: High Pressure Sodium Lamps . Later, the high pressure sodium lamp was developed due to the disadvantages of the low pressure sodium lamp. 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