How much light does your fish tank need?

Many experienced saltwater aquarists are hesitant to start a reef tank or upgrade their Fish Only or Fish Only with Live Rock tank to a reef tank because they don't understand the lighting requirements of corals and/or they believe the high price of led reef light is out of their reach.

led aquarium light is used for the plants in your fish tank. If you are not wanting to keep live plants then the lighting system will only be required to view the fish at night time. The substrate refers to all types of sand or gravel used at the bottom of the tank.

You can also buy all types of decor,including stones, driftwood, ornaments, and bubble making apparatus, which make the tank interesting to look at and give your fish something to interact with.

An example would be a 55 gallon tank would require 192.5 watts (55 X 3.5) of light for soft corals or 247.5 watts (55 X 4.5) for hard corals.

Without going into a long winded explanation, accept the fact that corals and other invertebrates (clams, anemones) need light in the 6700K (the light at the equator at noon) to 10000K range. 20000K bulbs are also available and work well for reaching the bottom of deeper reef tanks. Corals will thrive without actinic light, but you may want to add an actinic light to bring out the blue and green colors in your tank
LED aquarium light have several distinct advantages (low power consumption, low heat output and long bulb life). While these lights are expensive, those who have used them are very pleased with their performance

Controller and designable led grow lights

Having read of all the good features that LED grow light offer, it is now time to see how to actually go about the business of setting up your own indoor garden using LED lights. To be fair, you may already have a garden, and if so, can skip some of the steps that you may already have completed.

Irrespective of whether you are a gardening pro (with other types of grow lights), or a beginner, you must first the features that make a good LED grow light. Otherwise, you may end up suffering losses of time, money, enthusiasm and of course, precious seed/plants.

# Light Intensity, Wattage and Lamp Size
 it is clear that LEDs consume much lower power than other bulbs. This means that LEDs should ideally have a much lower wattage than conventional HIDs (as indicated in a table below. However, it is equally true that the minimum wattage of the individual LED should not be less than 1W if it is to have sufficient penetrative power. Mind you, by individual LED we mean each LED lamp and not the whole array. Hence, an effective LED array of 300 lamps will not be lower than 300W, even when LED lights used for purposes other than growing prove useful at lower power ratings.

More troublesome can be the lamp size. Experts believe that lamps smaller than 10mm are not capable of producing sufficient luminosity. In other words, all lamps of the array need to be of this size irrespective of the light color they are producing. The sad part is that it is extremely difficult to measure this out without precision apparatus, so if you’ve purchased a LED grow light array and there is no mention of the individual lamp size, there is not much that can be done about it. To be safe than sorry, it is better to inquire with store owners and experienced growers regarding the companies which do adhere to this rule, and the ones which share this information on the package. Conversely, if you find this information on the package and see that the details are verified by a reliable authority (see below), you can consider the manufacturer to be truthful and dependable.

# A Spectrum That Can Be Adjusted As Per Need

While analyzing the benefits of LED lights, we mentioned that LED lights can be tailored to meet the exact spectrum needs of the plants. This holds true for the same plant during the different phases of its growth as well. However, adjustment of the spectrum to suit the plant’s growth needs is not as simple as switching off one type of light (say blue during the flowering period), because the change must be gradual, like the seasons themselves.

Difference between led grow lights and led aquarium lights

Barely half as important as commercial horticulture, aquarium lighting is nevertheless a growing industry which is benefitting from the introduction of LED lights. Like terrestrial plants, marine and freshwater plants also use chlorophyll for photosynthesis (though the type of chlorophyll may vary). Hence, LED grow light serve pretty much the same purpose in aquariums as in the indoor garden. The difference, of course, is that huge arrays of high power lighting are not possible for two reasons. Firstly, aquariums tend to be small in general, and even within them, lighting has to be limited to certain corners, lest the fauna be disturbed. Secondly, it is crucial that the light used not produce huge amounts of heat, for water absorbs heat quickly and the resultant rise in temperature can reduce the longevity of the fishes.

90w led grow lights , by offering low heat high luminosity configurations, ensure that the plants in the aquarium receive sufficient light but the fauna is not disturbed due to excess heat. Further, they generally tend to be smaller than HIDs, and this allows them to be placed strategically, so that they neither hurt the plants or fishes, nor become an eyesore for the viewers.

Due to these reasons, LED grow lights have been gaining popularity in the aquarium industry, and many sellers and fish breeders promote the use of LED lights for aquariums. Indeed, companies selling aquariums have even begun stocking LED  aquarium lights or even better, producing them for customers. As the variety of designs and power ratings of the aquarium LED lights steadily increase, it is expected that they will easily surpass the existing aquarium lighting solutions.

Uses of LED Grow Lights Today

Given the benefits and growing affordability of LED grow lights , it should perhaps not surprise us to know that their applications are growing by the day. Indeed, even NASA is planning on using them to grow food in space!

Remember our reference at the beginning of our essay to the possible reasons why commercial growers may be faced with the issue of insufficient natural lighting, and how full spectrum led grow lights were the only possible solution to the problem? As the above sections would have made clear to you, LED grow lights are the best type of grow lights available today, so it is perhaps not surprising that with the rapid reduction of upfront costs of installing LED lights, their usage has risen dramatically.



Luck apart, LED grow lights have proved themselves to be superior to other lighting options. Part of the reason lies in their cost effectiveness, since many of the growers of recreational marijuana do not wish to expend huge sums at the start. Part of the reason also lies in the fact that marijuana is best grown using specialized techniques such as Sea of Green (SoG) and Screen of Green (SCroG). Finally, the success of LEDs is due to the fact that they can be purchased in customized arrays and fitted according to need, since informal indoor growing is often a space-constrained exercise involving attics and basements.

Why you should buy led lights ? For the trend !

Buy LED Grow Lights ONLINE here in Twilightgroups, the benefits are huge, LEDs are the future of indoor plant growing. We now bring you our 4th generation lights at a price that rivals traditional HPS indoor grow lights. Now is the time to get onboard and reap the benefits of this technology growing juicy vegetables, herbs and flowers, yield after yield.

Full spectrum LED grow lights are continually being developed and improved. They use much less electricity and aim to provide a more precise delivery of the desired frequencies of light ranging from 420 nm to 750 nm that will grow your plants from seed to harvest. The challenges with LED lamps have been in wattage. Getting the necessary intensity of light can prove to be a costly investment, though new and improved products are evolving all the time. Many growers are satisfied with the results obtained by using an 1000 watt full spectrum LED lights. But untill LED lamps have been futher developed most growers will continue prefering HPS lamps to ensure a bigger and more pottent yield.

Whatever medium you are growing your crop in, from soil to hydroponics, sufficient lighting with reduction of electrical energy usage is the optimal goal of any gardener. Using led grow lamps that generate less heat reduces fire risks from overtaxed wiring systems and plant damage or even combustion if they grow close to the lamp, along with reduced need for fans and cooling systems.

LED lights is expensive but proves cost-efficient in the long run

A February 2011 article in the magazine, "Science Illustrated" states:

Replicating a conventional farm with computers and LED grow lights is expensive but proves cost-efficient in the long run by producing up to 20 times as much high-end, pesticide-free produce as a similar sized plot of soil. Fourteen thousand square feet of closely monitored plants produce 15 million seedlings annually at the solar-powered factory. Such factories will be necessary to meet the world's rising demand for quality fruits and vegetables.

“After 15 years growing with HPS, I now only use LEDs”
~ campocultivator
For patients who need medical marijuana, the progress of LED grow lights has been closely watched. The lights, which promise greater energy efficiency and lower heat than their high pressure sodium (HPS) and metal halide cousins, have gained increasing visibility in the cannabis community.




But continuing research has resulted in LED lights that are more powerful than ever before. Within the last few years, many LED grow light systems have sprung up on the market for indoor gardeners. Just in the past year, LED grow lights have been improved and made more powerful to produce even better results when cultivating cannabis.

Some claim the LED grow light technology may finally put the cultivation of a few marijuana plants within reach of anybody who has a few extra bucks and a spare closet.

On paper, LED grow lights seem to outperform HPS grow lights (the current standard for growing marijuana) in almost every way.

For one, LEDs use significantly less electricity than HPS bulbs, plus they only give off a fraction of the heat.

“HPS grow lights are often at the heart of many growing problems, especially when marijuana plants are grown in a small closet or cupboard,” said sean wong, grower and cofounder of Twilightgroups.com. “The heat given off by an HPS grow light quickly builds up and can seriously hurt and even kill a marijuana plant if the hot air is not vented out through an exhaust system.”

The fact that HPS lights produce excessive heat is one of the major reasons why there’s so much interest in LED grow lights.

In contrast with HPS lights, LED lights do not require the installation of expensive ducting or a ventilation system to control the heat.

In fact, according to the manufacturers’ specifications, most 90w led grow lights  can be plugged into a standard electrical outlet and turned on immediately in any small space, with no worries about uncontrollable temperature changes.

LED成長ライトは spider 16 ライトを育てる主導

LEDはHIDを比較した場合、長期的に実行するようになりました安くなっています。LEDの代わりにHIDを使用して、あなたの電気代を下げるあなたのスペースを節約し、劇的に熱を減らし、プラスにはバラストとリフレクターを捨てることができます。LED成長ライトは、もちろん小さな、控えめな成長余地のための優れたアイデアです。

一言で言うと波長が違います。
照明用のランプは人の目に良く映るように作られています。ちなみに人間の目に良く映る色は緑色です。
対して植物育成専用のランプは LED成長ライトは 為に不必要な波長を抑え、必要な波長が多く出るよう作られています。
例えばオランダなどでは、夜間のチューリップのライトアップの為に緑のLEDを使用しています。これは、プラントの開花反応を阻害しない為です。
つまり、緑の光を幾ら照射しても植物は何の反応もしないという事です。
パルックボールなどの蛍光灯も照明用です。100ｗ相当などと表記されていますが、実際植物が吸収しているのは何ワット？と考えると自ずと答えは出てくるはずです。
これらを踏まえて考えると照明用より、植物育成専用の物の方が効率が良く、経済的だと言えます。

製品画像:

製品の応用図:

製品の詳細:

led grow lights review

Interestingly, the early adoption of LED grow light was not due to the one factor vital to commercial farming – returns on investment. As we noted, the earliest lights were many times costlier compared to HID grow lights, and were rather inefficient as well. However, they offered a number of unique advantages, such as the absence of heating. Given the closed indoor greenhouse complexes and the thousands of lights being used, heating can prove to be a major danger for the commercial concern. Matters are made worse by the fact that commercial lights have to stay on for 14-16 hours at a stretch in order to emulate the natural daylight. With LEDs however, the amount of heat produced over time is negligible enough for them to be touched by hand. This does not mean that LEDs do not produce heat at all, but rather that the heat does not escape in all directions. Instead, special cooling mechanisms are used to funnel out the heat without affecting the plants.

This lack of heating, coupled with other benefits like possible emission of UV rays (if needed), dimming capabilities and later, cost reductions, is triggering a massive shift away from HIDs to cheap led grow lights among commercial growers.

Even as debate rages on about the desirability of allowing ordinary citizens to grow marijuana, a number of states in the US has legalized the production of marijuana for medical purposes (and a handful, for recreational purposes as well). However, society is yet to accept the growing, sale and consumption of the herb, and therefore, growing the leafy plant outdoors is often considered something borderline illegal. Furthermore, marijuana is not a native plant of the colder regions, and especially in areas witness to snow and sleet, outdoor cultivation is simply unfeasible.

The solution is to grow marijuana – medical or recreational – indoors, in specially designed rooms. Rather fortuitously the fall in pricing of LED grow light has coincided with the gradual relaxation of marijuana growing norms in a number of US states. This implies that unlike traditional horticultural industries, marijuana growers have no legacy of using HIDs, and this has helped them take up LEDs directly.

Best lighting for growing cannabis

Traditionally, most cannabis requires long days of full sun to produce its full potential of luscious bud harvest.


When preparing your indoor garden, it is logical to do your best to replicate the cannabis plant's natural growing condition in regards to led grow lights to reap the largest and most potent harvest possible.

However, it is also important to consider the needs of the particular strain of herb that you will be growing, as the hybrids of today are designed to be much easier to grow. Royal Queen Seeds has a bountiful selection of auto-flowering feminized seeds that will dependably flower and deliver tasty potent buds without the hassle that growers have dealt with in the past.

Please browse through our extensive collection of options and select the seeds of your choice. You'll find a range of auto-flowering feminized seeds designed to grow a variety of heights and deliver the yield quantity you're dreaming of with a choice of THC and CBD levels, and a variety of growth time options.

With our auto-flowering seeds, a lighting system that uses full spectrum led grow lights or LED lamps on a 16 to 18 hour lighted cycle will deliver sturdy potent plants with a satisfying tasty harvest from seed to bud any time of the year. Full spectrum florescent and LED grow lamps run cooler, use less electricity, and simplify the life of the gardener greatly.

Which is Better, an HPS or LED Grow Light?

High pressure sodium and other discharge lamps have long been a mainstay of indoor hydroponics, but there are plenty of people promoting LED grow lights. HPS lamps are bright, warm, and carry the right spectrum of light for the growth stage of a plant.  LED lamps are just as bright, run cold, and give amazing energy savings.  HPS lamps are used extensively by home growers and have a fantastic support base within their own community, while LED lamps are being slowly adopted or used primarily by large groups like NASA for research on plants and gardening techniques.  Is there a deciding factor on which type is better?  That depends on what’s important to you, but maybe we can clear things up a bit to make your choice easier.
Many elements are involved for plant growth; nutrition, health, and light are all integral to vibrant and beautiful plants or fruitful harvests.  While you should never neglect any of these, cob led grow lights the most easily controlled factor in your plant’s life.  As we discussed with differential control, photoperiodism (the cycle of day and night required to trigger flowering or growth) can regulate stalk height, flowering, and node spacing.  Beyond that, you’ll find that HPS lamps are favored because they have the right PAR (photosynthetically active radiation) rating for plant health and growth.  PAR – not the PAR bulb shape – quantifies the amount of radiation between 400 and 700 nm, the spectrum most beneficial to plants for photosynthesis.

HPS lamps emit a lot of light in the red spectrum, which is beneficial during the growth cycle of the plants, and more than average light in the blue spectrum, which improves the flowering stage.  Now here chinese led grow lights famous.  Since LED grow lights typically use three LED sources of different colors, they cover both ranges for growth and flowering extremely well.  When purchasing a new grow lamp, considering the PAR wattage/lumens (the amount of light useable by the plant) is the best method of ensuring the highest yield.
Environment



By comparison, LED grow lights are far more efficient – roughly 80% more efficient than incandescent lamps – with very little energy lost to heat.  What heat is generated by the lamp comes from the LED driver, so virtually no heat is emitted with the light itself.  This lack of heat gives you the option of only cooling the driver, which can save quite a bit of money over cooling an entire greenhouse.  Then again, winter costs will increase if you need to run a heater throughout the winter to preserve your plants from cold damage.
 consider an 90w led grow lights , compared to an equivalent 400-watt HID fixture.  If you run 5 of these for 12 hours a day, after a year of use the HID lamps will cost roughly $900 while the LED fixtures were only $371 at $0.12 per kilowatt hour.  This, coupled with the long lifespan of LEDs, is a common argument for their use.  At an average of 50,000 hours before they begin to dim, LED grow lamps last for many seasons, more than enough to recoup the initial cost.  However, it’s important to remember that HPS lamps are far cheaper initially, and come in modules that can be replaced.  LED grow lamps, on the other hand, are usually a complete kit with few, if any, replaceable parts.  HPS lamps have a hood, ballast, and lamp which can all be replaced separately.  Careful attention to ballast and bulb care can also improve the lifespan of an HPS lamp.  When it comes to cost, you have to consider what’s most important:  Long- or short-term costs.
All in all,  Yes LEDs give the most useable light, but are the environmental and price costs worth the difference to you?  What do you think?  Let us know in the comments, or send us examples of your own greenhouse or grow room through Facebook, Twitter, Google Plus, LinkedIn, Pinterest, or Instagram!  As always, we’d love to hear back from you.

Too capricious! Twilightgroup’s guy riding 600km to Have a spring festival with his family

One bag and one bike,this easy luggage friend Jackson on his 600km riding journey from Shenzhen to xingguo (Janckson’s hometown).This special actitivity has inspired many comment on this boy in his hometown,all people all think he’s too “renxing”,means do things mainly according to his idea and heart instead of detailed calculation.

 Jackson’s all belongings in his 7 days and 600km riding journey

Jackson mainly use his smart phone’s GPS map to guide his home road

 different way to welcome China’s Lunar sheep year 2015

　　On 2015-2-12,Jackson left a word: The first step,then he start to his 600km riding journey with all his simple belongings. 

　　Jackson told the writer his idea to ride home start from the time when he failed to buy a train ticket on 2014.12,and his boss,Mr Sean in Twilightgroups company and his friend Dave in SupertechLED admires his courag,so he happily promise to sponsor him at once. 

　　From 2014-12-25,Jackson start to make plan for his riding schedule and start to buy necessary equipment.,and he left Shenzhen on 2015-2-12 when everything is ready and get back to home on 2015-2-18 to have a unite dinner with his family.

Jackson would have a short rest on the side of the road when he feels very tired.

 

The scenery taken along the road