sherman

I saw the 2 watt proto type at aquarama 2009 but not on display. Still waiting for the launching of the 3 watt unit

Actually the local support group can just break the circuit and connect an amp meter to measure the running current when the unit is on or running.

If that is the case then the white 3 w itself is also a poor performance as compare to most major LEDs on market today

poomoon ,like to know where above data come from.It is very far from most major led manufacturer spec.Below is what most led light supplier support LEDs can also save you money long term by elliminating bulb replacement. Most high power LEDs are rated to live for 50,000 hours before the light output drops to about 70% of the original rating. (I do not know why you say 20,000 hrs?)Thats a long time. With a light schedule of 10 hours a day, these LEDs could effectively last for over 13 years! The price you pay upfront is going to be more, but it could pay for itself within the first few years of ownership For more info refer to major led manufacturer claim and warranty or goto If above claim (By most led manufacturers) is truth then spending 3 times the price for a good same output LED unit(AI) is far more cheaper. This is my 2 ct opinion. If you spend S$600 in 2 years then over 13 years you will spend S$(600 X 13/2) or S$3900.

The next major advantage is heat. Now, I'm not going to say that these LEDs don't produce heat, as they do, and quite a lot of it. But what makes this different is where the heat is radiated from. Usually in most lights, heat is emmited from the bulb itself in the form of infrared light. LEDs do not emmit infrared from the emmiter and will not directly transfer heat into the tank like a metal halide bulb would. The heat that is generated comes off the back side of the LED. Usually, they are mounted to heatsinks to effectively control the heat, and radiate it into the air. Without additional heat placed into the tank, there is now less of a need for chillers and additional fans to cool the tank, saving you money. For more info refer to http://www.nano-reef.com/forums/index.php?...t=0&start=0

Bro, I remember I saw one in your tank,right? Can PM me where you get that and how much

Who is the top 10 LED manufacturers in the world? Seoul Semi 4th in LED Rankings In 2007, the leading LED suppliers remained the same, but they now face strong challenges from companies in Taiwan and Korea, according to a market research report available at Electronics.ca Publications. It is believed that the Top3 rankings for 2008 will be the same. ComponentsAccording to a market research report from Electronics.ca Publications, which focuses on LEDs, the top three companies in 2007 in terms of total dollar revenues for packaged LEDs were Nichia (24% of the market), Osram Opto (10.5%) and Lumileds/ Philips (6.5%). These three companies have been well established as the top three for several years. Although full data for 2008 was not available as the report went to press, it is believed that the top three rankings will be the same for 2008. However, an analyst Jamie Fox stated that: "Lumileds may face competition for 3rd spot from Seoul Semiconductor in the next few years. For several years now, Seoul Semi has grown aggressively and faster than the overall LED market and has risen steadily through the top 10 to reach 4th spot." Other companies in the top ten in the report include Citizen and Toyoda Gosei from Japan, as well as Everlight and Kingbright, two Taiwanese companies that have also seen good growth. Avago are also in the top ten by total revenue. Other LED companies are more focused on profit margin and quality of products, or developing a portfolio with an eye on the long term lighting market, rather than just the largest total revenues. For example, Cree are widely considered to be one of the top 4 or 5 LED companies although in terms of packaged LED revenues this is not actually the case.

The 30 watt led is rated at 2000 lm. That workout to be 66 lm/w Very poor performance compare to their 3 watt white led running at 160 lm/w So what does that mean? Waste more energy to achieve the intensity and PAR you need. So go for the 3 w white if you are getting

Let him have some time to run in and then see the result

Most high power led is from 90 to 140 degree

At 1 A a good grade 3 w led should give you 240 lm Z-Power LED P4 series is designed with Seoul Semiconductor’s own phosphor and packaging technology. The P4 emits 240 lm at 1 A of light and features the industry’s highest luminous efficacy (100 lm/W @ 350 mA at the maximum) with only a single die. Same with most major led manufacturer.

Bro, This is very interesting but just wonder why need to change every 24 months. To know more about led's life please read attached manufacturer Reliability spec. http://www.seoulsemicon.com/en/product/prd/zpowerLEDp4.asp I only attached SSC spec for your reading . You can visit other major led manufacturer 's site for their spec also.

Very interesting info. Like to know where this info is from. Anyway this is from the manufacturer mouth about heat and led Operating temperature is limited by junction Temperature(Tj) inside chip and operating power. So operating temperature shouldn’t be over maximum Tj. Tj normally can be taken from the led spec sheet Generally Junction temperature of Z-power LED(3w) has to be maintained under the permitted temperature(125 Celsius)mentioned on the datasheetof Z-power LEDLife time is bound up with Junction temperature. At high junction temperature,Life time is reduce and at low junction temperature Life time isincreasing.

Most LED are make to have 90 to 140 Deg optics. Is optics something you need to worry when you use leds as aquarium light? Let see what the expert from nanoreef.com had to say.: Optics Optics are not one of the parts that you will need in every application. The whole point behind them, whether they be reflectors or lenses, it to focus the light into a smaller area. These start to become more important for tanks over 12-14" tall. The amount of light at 12" is considerably less than at the surface, and it gets exponentially worse the deeper you go. Optics can help bring the performance back up to usable levels for deeper tanks. Need more info visit : http://www.nano-reef.com/forums/index.php?...&start=1220

How they get 110w? 18PCS x 3W White LED, 18PCS x 3W Blue LED I believe they use (18 x 3 )+(18 x 3) =110 watt In order to get 110 watt we need to run the led at 1 Amp. So maybe it is good to check with the manufacturer if all the led is run at 1 Amp.

I think as long as the flow is not direct at the coral but reflected off the glass plane should be ok.

Bro, Coat a thin layer of vaseline .No issue

Bro, Like to share your water parameter.

Wow, bullseye. The balance can use to run 3 watt leds. At least a dozen .

Wow so fast

You can the the fan guide from the shop you buy the fan. I think is S$3 to S$4 EACH. You need two pieces.Since your fan is expose both sides. Don't take the risk bro

ok will do that.Thanks

Growth is more then before but still cannot get the thick growth

Wow that is good news. More LPS trips next time

The scrubber in May before the LED change