Home Improvement

Generating between 65 to 115 lumens of light per each watt of consumed electricity, metal halide grow light lamps are considered to have high efficiency. MH lights produce light, which is very close to the natural sunlight with the rich blue spectrum. Due to this, MH lamps support vegetative growing in the most desired way – when plants have many leaves on the stem with small internodes.

Structurally, metal halide lamp is a vacuum glass tube. There is also an arc tube inside, filled with mercury and other metals in iodine form. Under the influence of electric current, those metals start to generate light and heat intensively. Though metal halide bulbs can be either transparent or coated with phosphorus, the first type is more preferred for the indoor gardening, since it produces very bright light.

There are different sizes of metal halide lamps, starting from 70watts and finishing with 1500 watts. But 250w, 400w and 1000w are modifications, most commonly used in hydroponics systems gardening. In order to make MH light to work, it is necessary to use a ballast, designed for a particular bulb size. Ballast is, in fact, a transformer, which decreases voltage to some predefined amount.

The lamps can work only in the positions they were designed for. Those marked with BU or BD should be used only in vertical position; while those lamps, which carry HOR sign, are for horizontal application. Besides, there are also universal (U) lamps, which can operate in either position. 

There are also many different styles of metal halide lamps available on the market today. Along with typical or regular MH bulbs, there are also Super Bulbs, which can produce up to 10-12% more light than ordinary bulbs.

Regular metal halide bulbs should be replaced after about 18 months or 9500-10000 hours of use. Super bulbs are less durable and should be replaced more frequently – approximately after 12 months or 6500 hours of use. These recommendations apply if grow lights will work 18 hours daily.

Hydroponics is the method of growing fruits and vegetables without dirt.  The main concept is nutrients are absorbed by the plants roots and with lighting you are able to grow indoors and even in the winter with these DIY hydroponics systems.

Below you will find some of the more well loved DIY hydroponics that you can either make yourself or buy in kits.

1. Deep Water Culture DIY Hydroponics
Also known as the reservoir method is the simplest of all the at home DIY hydroponics. Plant containers simply sit down in a reservoir of nutrient solution. There is also an aquarium air pump that allows the roots to get oxygen. This is the best choice for organic hydroponics growing system. The one thing to be careful about with this system is to be sure that light does not hit the nutrient solution. If it does you could end up with an algae problem that will take all the nutrients that your plants need to grow.

2. Flood and Drain Systems
Also called the ebb and flow DIY hydroponics system. Plants sit in their own container separate from the nutrient reservoir. A pump allows the solution to soak the plant roots occasionally and then the solutions drains back into a reservoir. What type of media you choose will depend upon how often you flood the plant roots. The parts and functions of this DIY hydroponics system also make it a excellent choice for organic, indoor hydroponic growing system.
You will need some sort of media for the nutrient solution, such as lava chips rock wool or clay pellets.

3. Aeroponic Systems
In these DIY hydroponics growing systems, a container holds several gallons of nutrient solution. Spray heads are used to soak the container with a fine mist as the plant roots hang down in the container. There is no growing medium used in this method. The individual parts can be expensive and the spray nozzles will often clog if you use anything besides hydroponics fertilizer. This method is not for you, if you are looking to grow organically.

4. Drip DIY Hydroponics Systems
The plants are again in their own tray, separate from the nutrient reservoir. A pump pushes the nutrient solution through tubes. Each plant is fed by the dripping tube from the top. You will need a quick draining medium like clay pellets for this method, unless you are using slow emitters. Once again there can be issues with clogging and it can be hard to control the flow. A DIY hydroponics system like this will more than likely work poorly and it can get expensive. Also, organic nutrients will clog up the emitter, so this will not work well if you are trying to go organic.

There are several other vital education factors when it comes to DIY hydroponics.  You will certainly want to make yourself aware of common problems that may arise with your system.  The lighting and the nutrition of your plants will also be vital factors for your success.

Along with water, hydroponics plant nutrients, CO2 and oxygen, grow lights is the key basic component, required by plants to live. Providing additional light is necessary for indoor gardening. Furthermore, light should resemble the sunlight as much as possible. The major concern with other types of lights is that they do not produce light in the appropriate spectrum, required by plants.

Being the most efficient bulbs, HPS bulbs are commonly used by gardeners. Producing light in red and yellow spectrum, light generated by high pressure sodium lamps resembles the natural sunlight during autumn. Due to this peculiarity, HPS light is the best for promoting plants blooming. But, some plants may react negatively to this type of light, growing with oblong stem, etc. To address that issue, new HPS bulbs with color correction have been developed. For example, Son Argo feature properly balanced light spectrum, which suits perfectly for the needs of indoor gardening.

High pressure sodium grow lamps are made of a semi-transparent ceramic arc tube, filled with a mixture of sodium, mercury, and xenon. The arc tube is placed into the protective outer glass shield, similarly to metal halide bulbs. The power ranges of HPS bulbs vary from 35w to 1000w, while the most well loved are 250w, 400w, 600w and 1000w.

HPS bulbs are more durable in comparison with MH bulbs: they can be replaced once every 24 months. Though HPS grow lights lose their brightness slowly, in order to keep the brightness at the steady level, it is still recommended to replace the bulb within the specified period.

Among the groundbreaking new types of grow lights are sulfur lights, which are said to feature extremely high brightness and effectiveness. But, these bulbs are still rare on the market in view of the high price, so it is early to evaluate their practical value for those gardeners, for whom indoor hydroponics growing remains a leisure activity.

One can delight in hydroponics gardening any season of the year, but it is especially rewarding during the cold and dark winter days. Being a type of indoor gardening, this system implies growing of plants in a special growing medium, supplied with nutrient solution, instead of soil. Similarly to other indoor gardening methods, with hydroponics gardening it is necessary to use grow lights, which allow plants to grow, make food and reproduce themselves through flowers or fruits. For this purpose HID lights are commonly used. There are several types of HID or high-intensity discharge lights: for example, metal halide grow lights and HPS grow lights. Every HID light requires digital ballast, which is necessary in order to control electrical current within the lamp, and thus provide its seamless functioning. Supplying light with a reflector is highly recommended as well, since it allows pointing the light in proper direction and increasing the light, produced by the bulb itself. Other type of grow lights are cost-effective and lightweight LED lights, where light-emitting diodes are used to produce light in colors beneficial for keeping up plant growth. The use of any of these lamps is highly effective for hydroponics growing.

Metal halide lamps contain aluminum arc tube, filled with argon, mercury and a variety of specific metals. It is a set of different metals that provide a particular color of the light, produced by the lamp. The argon gas works to start a lamp, when electric current is introduced at the electrodes on either end inside the arc tube. Under the effect of electric current mercury and metals start to vaporize and the light is produced. The key benefit of these lamps is that being small in size they produce a significant amount of light.

HPS grow lights, also known as high-pressure sodium lights, also have an aluminum arc tube inside, similarly to metal halide lights. But, the filling of the tubes is different: in case of HPS there are sodium, mercury, and the Xenon gas inside. Both metal halide lights and HPS lights require ballast for stabilizing electric current and providing smooth performance.

LED grow lights are small, but work very efficiently providing a lot of bright light. In general, they are similar to the lights, used for decorating Christmas tree. The light is produced when electric current moves between the two crystals inside a diode, which works as semi-conductor. Furthermore, LED grow lights usually have a reflector and a lens to direct the light where it is needed.

 Along with being cost effective and energy saving, there are multiple different color spectrums to choose among in order to suit specific plants needs in the best way. So, irrespectively to what type of grow light you choose, it will work accurately and provide effective growth of your indoor plants.  

Fluorescent Grow Light

 Inexpensive and readily available in hardware stores and be utilized with regular light sockets. Producing less heat or none at all compared to full-size fluorescent grow lights.

Not just because of its small size and low heat output; compact fluorescent lights also produce the widest range of color spectrums to any type of lighting. It is ideal for shelf gardening due to their low heat output making the use of multiple shelves on top of each other possible. Compact fluorescent lights can be used with seedlings and small plants in a well designed hydroponic system indoor garden.

 Common Problems with Compact Fluorescent Light Bulbs

 Problems with compact fluorescent light bulbs like inefficiency and poor light penetration are common.  Several compact fluorescent bulbs maybe used and consume energy as that of one HPS bulb, but do not produce the same useable light for the hydroponic indoor garden. 

Optimizing Fluorescent Grow Lights

 With the disadvantages of comparative inefficiency compared to HID lights, several things maybe done to counteract this.

Properly matching lights to the corresponding growth cycle.

Increasing Watt ratings increases light penetration

One cheap and easy way to maximize energy consumption is by the use of reflectors. Compact fluorescent lights have a 360 degree of distribution but only 90 degrees of it can be practically used. Reflectors direct the light to corners in order to maximize the light produced.

 High Intensity Discharge Lighting

 HID light bulbs are the most after lighting system by both hobbyist and professional growers. It has made possible all-year, all-season planting for thousands of indoor gardeners and industrial nursery growers. Due to their efficiency ( 10x more light produced than conventional incandescent bulbs) and color spectrums ideal for plants have resulted to better yields and plant quality all year round. Metal Halide (MH) light bulbs mainly produce blue lights, making them ideal for plants undergoing the vegetative phase of development.

Industrial cultivators the world over are the main users of HID grow lights. HID lamps provide numerous advantages that conventional Fluorescent and incandescent lights lack. Monetary benefits abound, it boosts overall plant production giving better harvests, and environmental factors are eliminated allowing all year-round production. HID lights operate stock 110 to 220 volts AC home currents and have a standard three prong adapter to link up. HID grow lights mostly come with a ballast resistor and reflective hood.

Photosynshesis in plants allows plants them to produce their own energy. Chlorophyll in plants enables plants to convert CO2, water and energy from light to nutrients and sugars. When all this elements like CO2 and nutrients are readily and plenty in a desired surrounding, the potential for growth is bound only to the amount and quality of light available.

 High Pressure Sodium (HPS) light bulbs produce reddish light, it is ideal during the fruit phase of the plant cycle. Cooler (blue) and Warmer (orange) color spectrums raise chlorophyll production and fruit energy. The sun produces cooler lights when it is higher in the skyline, seen in the summer calendar months. It is essential for plant growth shape and keep it tight. Warmer light, experienced when the sun is lower in relative position to the skyline is vital for blooming plants and during the fruit phase.

Choice of lights can also depend on the type of plants grown. Metal Halide growth lights are ideal for bushy harvests such as cabbage and vegetating herbaceous plants. Blossoming plants on the other hand is better suited by high pressure sodium growth lights. Conversion light bulbs are also available for different organizations. More expensive than other lights, conversion lamps give that extra advantage of starting your plants with a metal halide growth light giving taut, small development and being replaced by high pressure sodium light bulbs when the fruit stage of the plant is reached. Recent developments have introduced convertible ballast resistors for regular metal halide growth lights and high pressure sodium light bulbs.

HID grow lights main advantage is that it eliminates such factors as climate, temperature and time of day. Season dependent plants can be grown throughout the year; they provide an alternative to solar light. For those who are garden and flower hobbyists, this would be a plus.

Hydroponic growth lights also gives you control over light exposure. Allowing us to hasten a plants growth or that flower to bloom. Ideal light color, duration and concentration are the key factors in growing those choice plants.

 High Pressure Sodium Bulbs 

A clear ceramic arc tube suspended inside a glass bulb characterizes High Pressure Sodium Bulbs. Xenon gas is the main component inside the inner tube which is then ignited to produce an arc of light. Sizes range fro 35 watts up to 1000 watts. The most well loved of which are the 250 watts, 400 watts and 1000 watts.

 Advantages of High Pressure Sodium Bulbs

 Efficiency is one of its advantages; they provide the best light penetration and have strong light spectrums necessary for plant growth. Mainly producing red and yellow lights or small or no blue lights, they mimic the autumn sun. Popularity for HPS lights are mainly attributed to their low energy to light ratio and is the most economical and efficient than any other type of lighting system. HPS lights work best during the flowering or fruit stage of the plant growth cycle.

 Disadvantages of HPS High Pressure Sodium Bulbs

 High Pressure Sodium Bulbs produce fantastic amounts of heat. Proper ventilation and excellent garden construction and plotting help to offset this negative effect. Like all HID growth light systems price is the main drawback compared to fluorescent lights. HPS lights are currently more cost effective compared to other HID growth light systems.

High Pressure Sodium Light bulbs are replaced after 24 months to ensure their and your gardens efficiency.

 Metal Halide Bulbs

 Metal Halide bulbs are constructed by placing an inner arc tube inside vacuum-sealed glass tubing. Electric currents passed through the inner arc which in turn ignites mercury and iodide materials in the tube.

 Advantages of Metal Halide Bulbs

 Metal Halide Bulbs mimic sunlight during summertime. Producing a blue spectrum of light most ideal for plants in their vegetative growth phase. They are also a excellent choice for indoor hydroponic garden systems because of their efficiency in producing light.

 Other Metal Halide Bulb Information

 Available from 70 to 1500 watts, Metal Halide bulbs present a wide variety of choices. Most well loved and commonly used are the 250, 400 and 1000 watts metal halide bulbs. Ballast specifically tailored for each bulb is also essential. Mounting positions depend on its specific bulb type (marks or guides are usually provided). HOR bulbs are mounted horizontally, BU/BD is vertically mounted and U (universal) bulbs could be mounted either way. The vertical position is the most ideal and provides utmost efficiency.