Reply With Quoteled can last 50000 hours or longer. however, the operating junction temperature has to be kept low, < 75deg.
do note that life time for led is stated as the time take for light output to drop 30% (compared to new). the led will still operate.
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I am not sure of the longevity of the led light. But I myself would not want to use the same item for 10 years when in that time line, a better product may emerged and set the standard. Right now, there are multiple platform of light being developed and it may trickle down into the aquarium industry. Be on the watchout.
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led can last 50000 hours or longer. however, the operating junction temperature has to be kept low, < 75deg.
do note that life time for led is stated as the time take for light output to drop 30% (compared to new). the led will still operate.
thomas liew
i am trying SSL instead of normal LEDs.. wish me luck!!!
what is SSL?
http://www.tmc-ltd.co.uk/aquarium/aquaray-lighting.asp
I've heard that the LED lights from NA gives off an unsightly yellow tinge. Its the same case for TMC's Aquaray Tropical White and Natural Daylight and so aquascapers like PFK's George Farmer are using Marine White to good results.
If NA offers LEDs without that yellow tinge, I bet it will be quick to catch on.
Does anyone know which LFS in Singapore stocks TMC's Aquaray?
Those TMC aquarays are very expensive for what they are. VERY expensive.
Currently keeping many wild betta species and other anabantoids.
Hmm, Oceanus LED lights seem to be cheaper.. Hopefully LED light prices will drop soon. But frankly, I'll pay for them if they work as well as claimed.Originally Posted by Mez
sim lim tower can DIY in bulk? anyone tried asking?
I come across a 3 LED light strip that can output 72lumen, angle beam is 120 degree, CRI 72.1 and voltage is 12v, is this ok for use in planted aquarium use?
from the cri figure, the leds should be emitting pure white light or ~6500k. such leds are predominantly blue with a yellow phosphor. the light strip can be used but performance may vary.
you'll need a constant current power supply to drive the leds. normal power supply cannot be used to power the light strip directly; unless the light strip has some form of current limit.
thomas liew
Thanks for the comment, I found another model in T5 tube and it is able to output 841lumen and in 6500k with slightly blue tinge, looks like a much better option, however price per tube is about $100 for about 60cm length, so decided to wait for the price to go down before I jump into it.
i read much about LED and really interested to get one for my new 4ft tank. The lumen aqua (http://www.oceanus-light.com/lumenaqua36.html) one looks very nice but I saw that it's mounted very close to the water surface and only covers 20 cm of the width. So, if I have a 120x60x60 tank, is the coverage enough?
I'm not sure whether I'm miscalculate or LED is not much better than T5 light
Normal OSRAM T5HO (24W) is generating 1600lm, CREE LED (3W) is 228lm and 5mm LED (0.068W) is 5.3lm. For LED to have the same luminance as T5HO, it require approximately 7x3W CREE LED or 302x5mm LED. In other word in term of wattage it isn't much different.
In fact based on CREE website, Compact FL is generating 65 lm/W and LED is 58 lm/W. LED is less efficient than LED.
I'm not sure about the PAR (Photosynthetically Active Radiation) value though.
After using LED lights for some time, I do realise some things.
1. LED lights is greatly affected by distance. The lumens will drop when the distance increase.
2. LEDs are small light source. Even the brightest LED will not shine the distance compared to FL lights.
The advantage of LED is lower heat. This translate into the ability to place the lights lower and having more LEDs.
I am actually looking at other LED lights. Especially those that have more LEDs and bigger area - which does not comes in the shape of light tubes.
Oceanus LED is a complete letdown. It is a joke to say that it is comparable to T5.
LumenAqua is overpriced. With the price that it has, we can easily pay for a good technician to customise a LED light set, which can even have individual LED control. Just look at the numbers of LEDs it has, and you wont even consider buying it.
Maybe LED only suitable for nano tank
how do we go about customising a led set for 4 ft tank? Where to get a good led light tubes, how many and can they fit into the usual t5 light case?
Not really only suitable for nano tank, it is not suitable for tall tank - more than 2ft. But T5 is also not suitable for 2ft height tankMaybe LED only suitable for nano tank
I should say, it is suitable for height upto 1.5ft.
The I used are LED tubes are direct replacement to the T5 tubes. For mine, which is a 2ft casing, it fits 3 tubes.
For my tank, 60cmX40cmx45cm, I am using 3 tubes of LED light. If I would re-setup the lightings, I would get 2 casing with 2 tubes of LED lights each.
Hello, where did you buy your LED light?Not really only suitable for nano tank, it is not suitable for tall tank - more than 2ft. But T5 is also not suitable for 2ft height tank
I should say, it is suitable for height upto 1.5ft.
The I used are LED tubes are direct replacement to the T5 tubes. For mine, which is a 2ft casing, it fits 3 tubes.
For my tank, 60cmX40cmx45cm, I am using 3 tubes of LED light. If I would re-setup the lightings, I would get 2 casing with 2 tubes of LED lights each.
i am interested in the LED lightings too and i happened to come across this LED strip at a price that is pretty ok. Problem is have to DIY and i am a noob in electrical stuffs. Do you guys think this is bright enough? http://www.dealextreme.com/details.dx/sku.11303
I got mine from NA.
LED lighting is still relatively expensive now. True hole LED might Light tube might be cost cheaper bowever, the life time is much shorter. SMT LED is recommended howerver, the pricing is .....
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