LED as main light - Page 4

bluetropic · 03/16/2004, 02:12 PM

So if it is 45000 lux at 1 meter, I would assume most corals come from water deeper than 1 meter, do not need as much light as you would think. How much?-I have no idea. Does it give readings for different depths?

ONAGI · 03/16/2004, 02:27 PM

very interesting thread. Where are people finding LEDS on rolls?

bluetropic · 03/16/2004, 02:30 PM

So at 1 meter it is 45000 lux, I would assume most coral live deeper than 1 meter, therefore not requiring that many lux. How much?-I have no idea. Does it give lux readings for different depths?

bluetropic · 03/16/2004, 02:33 PM

Sorry about the X2 post. There are tons of bulk suppliers on the net. Just do an explorer search. (LED bulk sales supplier or whatever)

MadTownMax · 03/16/2004, 02:40 PM

found 100 for $4 on e-bay, although the S+H is $20 - is that a good deal?

ONAGI · 03/16/2004, 03:10 PM

Thanks Blue.

MadTown,
that's not a bad price. if it's the same I've seen on e-bay, they wont combine purchases to save on shipping. Each order will be $20 shipping. Can't buy 2 -100 LED lots for $28. They would charge $48 shipped.

There's got to be better deals out there. The roll buy sounds like it may be the way to go possibly. I'll share what I find.

Dr. Drudge · 03/16/2004, 03:16 PM

Check out

http://www.lumileds.com

I got a couple of the Luxeon Stars- one blue and one white- to try for night viewing.
They are Really bright - almost too bright for moonlights.

Not sure what costs less in the long run, but you would need a lot less of these.

greenbean36191 · 03/16/2004, 04:07 PM

It looks like the luxeon stars are 20 lumens each at 10000k

olemos · 03/16/2004, 06:00 PM

You guys can check this site 100 LEDs white super luminosity 100000mcd
with 100 resistors shipped to your home for $32.25

I got my blue LEDs for moon lite from this sit would order again from them if needed

olemos · 03/16/2004, 06:07 PM

opps from here
http://besthongkong.com/

jhunko · 03/16/2004, 07:39 PM

I want to keep this thread a live so I will post a few qustions and share some opions.

1. I know it has been asked but has anyone put a meter on these things to see how much light we would get

hmm, I guess only one qustion, now time for the opion

Besides the heat, and power concumtion the benifits are endless. you could dim them to simulate sunrise/set, and you would not have to worry about a smoking hot ballast. the biggest benifit is you would not be mounting all that glass above your tank, it has always been a feer of one of those things breaking in my tank.

I have been pondering this also, my idea was to mount 3 or 4 in small array (not sure on colors yet) these arrays could be moved around to provide you with the best overlaping of light. and if one array failed you could just replace that one. after you seal everything up, it would be water tight and a lot safer then what we are all using now.

Dr. Drudge · 03/16/2004, 08:32 PM

I don't think LED's are ready for reef lighting yet.

The Luxeon Star is rated at 20 lumen, 5500K.

Say you need 15,000 lumen - the output of a 175w MH *
You would need 750 Luxeon units.
This simple analysis is probably not exact, but I think it's in the ballpark.
Oh yeah, then consider the spectrum requirements...

* Tullock, Natural Reef Aquariums , p109

sandisct · 03/16/2004, 09:30 PM

20 lumen thats for 1 single luxeon star.... eg.. what is the value if the light of several Leds overlap each other... because LED's light are kind of focus... so if 2 led's light overlap each other would it measures 40 lumens at that specific spot?

MadTownMax · 03/17/2004, 07:08 AM

Olemos - that's the same guy, he's on e-bay too.

I"m going to throw a couple in a reflector for supplemental when I get them.

sandisct · 03/17/2004, 07:45 AM

I've got the lux reading!!!!

sandisct · 03/17/2004, 07:48 AM

For comparison... i took the lux reading of my living hall's pc light.

sandisct · 03/17/2004, 07:50 AM

This is the readin i got for 2 pc light ... at approx. 3ft away

sandisct · 03/17/2004, 07:52 AM

And this is the readin i got when i put the lux meter in my tank...

With 99 8000mcd ultra bright white!!!

It is showing 300lux

sandisct · 03/17/2004, 07:53 AM

And when i hold the meter about 2 inch away from the LED. this is what i got...

sandisct · 03/17/2004, 08:02 AM

any comments

MadTownMax · 03/17/2004, 08:13 AM

I think you need more

sandisct · 03/17/2004, 08:18 AM

yeah ... i think so too... but i think i need to get those with a wider angle than these that i have

MadTownMax · 03/17/2004, 08:28 AM

I wouldn't go wider angle, you probably want as narrow of an angle as possible to "punch" as deeply into the water as you can, if you can fit about 600 LED's in there you could keep whatever corals you want, then all that needs to be seen is how much intensity is lost in deeper water.

bluetropic · 03/17/2004, 08:28 AM

Those are encouraging results. I would not worry about getting LEDs with a wider angle, I would just get more. Your panel works alright for the amount of LEDs that are in there! It would be interesting to see the results woit 300-400 LEDs. I really don't think 750 LEDs is unpractical at all.

sandisct · 03/17/2004, 08:38 AM

new reading is much more encouraging!!!

03/16/2004, 02:12 PM	#76
bluetropic Registered Member Join Date: Mar 2004 Location: Orillia,Ontario,Canada Posts: 260	So if it is 45000 lux at 1 meter, I would assume most corals come from water deeper than 1 meter, do not need as much light as you would think. How much?-I have no idea. Does it give readings for different depths? __________________ Allen Eastcott Current Tank Info: Live plants, Flamingos, Tetras, Corys and Barbs

03/16/2004, 02:30 PM	#78
bluetropic Registered Member Join Date: Mar 2004 Location: Orillia,Ontario,Canada Posts: 260	So at 1 meter it is 45000 lux, I would assume most coral live deeper than 1 meter, therefore not requiring that many lux. How much?-I have no idea. Does it give lux readings for different depths? __________________ Allen Eastcott Current Tank Info: Live plants, Flamingos, Tetras, Corys and Barbs

03/16/2004, 02:33 PM	#79
bluetropic Registered Member Join Date: Mar 2004 Location: Orillia,Ontario,Canada Posts: 260	Sorry about the X2 post. There are tons of bulk suppliers on the net. Just do an explorer search. (LED bulk sales supplier or whatever) __________________ Allen Eastcott Current Tank Info: Live plants, Flamingos, Tetras, Corys and Barbs

03/16/2004, 03:16 PM	#82
Dr. Drudge Registered Member Join Date: Feb 2004 Location: Long Island, NY Posts: 85	Check out http://www.lumileds.com I got a couple of the Luxeon Stars- one blue and one white- to try for night viewing. They are Really bright - almost too bright for moonlights. Not sure what costs less in the long run, but you would need a lot less of these. __________________ I cannot afford a signature at this time.

03/16/2004, 04:07 PM	#83
greenbean36191 Premium Member Join Date: Jun 2003 Location: Ft. Lauderdale Posts: 10,598	It looks like the luxeon stars are 20 lumens each at 10000k __________________ Some say the sun rises in the East. Some say it rises in the West. The truth must be somewhere in the middle. Current Tank Info: tore them down to move and haven't had the time or money to set them back up

03/16/2004, 02:27 PM	#77
ONAGI Registered Member Join Date: Aug 2002 Location: NE OHIO Posts: 507	very interesting thread. Where are people finding LEDS on rolls?

03/16/2004, 02:40 PM	#80
MadTownMax ***erately knowledgable Join Date: Feb 2003 Location: Appleton, WI Posts: 2,750 Blog Entries: 1	found 100 for $4 on e-bay, although the S+H is $20 - is that a good deal?

03/16/2004, 03:10 PM	#81
ONAGI Registered Member Join Date: Aug 2002 Location: NE OHIO Posts: 507	Thanks Blue. MadTown, that's not a bad price. if it's the same I've seen on e-bay, they wont combine purchases to save on shipping. Each order will be $20 shipping. Can't buy 2 -100 LED lots for $28. They would charge $48 shipped. There's got to be better deals out there. The roll buy sounds like it may be the way to go possibly. I'll share what I find.

03/16/2004, 06:00 PM	#84
olemos Premium Member Join Date: Feb 2004 Location: Long Island, NY Posts: 1,791	You guys can check this site 100 LEDs white super luminosity 100000mcd with 100 resistors shipped to your home for $32.25 I got my blue LEDs for moon lite from this sit would order again from them if needed __________________ ? Current Tank Info: 350 gl

03/16/2004, 06:07 PM	#85
olemos Premium Member Join Date: Feb 2004 Location: Long Island, NY Posts: 1,791	opps from here http://besthongkong.com/ __________________ ? Current Tank Info: 350 gl

03/16/2004, 07:39 PM	#86
jhunko Registered Member Join Date: Feb 2004 Location: Sumter, S.C. Posts: 646	I want to keep this thread a live so I will post a few qustions and share some opions. 1. I know it has been asked but has anyone put a meter on these things to see how much light we would get hmm, I guess only one qustion, now time for the opion Besides the heat, and power concumtion the benifits are endless. you could dim them to simulate sunrise/set, and you would not have to worry about a smoking hot ballast. the biggest benifit is you would not be mounting all that glass above your tank, it has always been a feer of one of those things breaking in my tank. I have been pondering this also, my idea was to mount 3 or 4 in small array (not sure on colors yet) these arrays could be moved around to provide you with the best overlaping of light. and if one array failed you could just replace that one. after you seal everything up, it would be water tight and a lot safer then what we are all using now.

03/16/2004, 08:32 PM	#87
Dr. Drudge Registered Member Join Date: Feb 2004 Location: Long Island, NY Posts: 85	I don't think LED's are ready for reef lighting yet. The Luxeon Star is rated at 20 lumen, 5500K. Say you need 15,000 lumen - the output of a 175w MH * You would need 750 Luxeon units. This simple analysis is probably not exact, but I think it's in the ballpark. Oh yeah, then consider the spectrum requirements... * Tullock, Natural Reef Aquariums , p109 __________________ I cannot afford a signature at this time.

03/16/2004, 09:30 PM	#88
sandisct Moved On Join Date: Mar 2003 Location: Singapore Posts: 133	20 lumen thats for 1 single luxeon star.... eg.. what is the value if the light of several Leds overlap each other... because LED's light are kind of focus... so if 2 led's light overlap each other would it measures 40 lumens at that specific spot?

03/17/2004, 07:08 AM	#89
MadTownMax ***erately knowledgable Join Date: Feb 2003 Location: Appleton, WI Posts: 2,750 Blog Entries: 1	Olemos - that's the same guy, he's on e-bay too. I"m going to throw a couple in a reflector for supplemental when I get them.

03/17/2004, 07:45 AM	#90
sandisct Moved On Join Date: Mar 2003 Location: Singapore Posts: 133	I've got the lux reading!!!!

03/17/2004, 07:48 AM	#91
sandisct Moved On Join Date: Mar 2003 Location: Singapore Posts: 133	For comparison... i took the lux reading of my living hall's pc light.

03/17/2004, 07:50 AM	#92
sandisct Moved On Join Date: Mar 2003 Location: Singapore Posts: 133	This is the readin i got for 2 pc light ... at approx. 3ft away

03/17/2004, 07:52 AM	#93
sandisct Moved On Join Date: Mar 2003 Location: Singapore Posts: 133	And this is the readin i got when i put the lux meter in my tank... With 99 8000mcd ultra bright white!!! It is showing 300lux

03/17/2004, 07:53 AM	#94
sandisct Moved On Join Date: Mar 2003 Location: Singapore Posts: 133	And when i hold the meter about 2 inch away from the LED. this is what i got...

03/17/2004, 08:02 AM	#95
sandisct Moved On Join Date: Mar 2003 Location: Singapore Posts: 133	any comments

03/17/2004, 08:13 AM	#96
MadTownMax ***erately knowledgable Join Date: Feb 2003 Location: Appleton, WI Posts: 2,750 Blog Entries: 1	I think you need more

03/17/2004, 08:18 AM	#97
sandisct Moved On Join Date: Mar 2003 Location: Singapore Posts: 133	yeah ... i think so too... but i think i need to get those with a wider angle than these that i have

03/17/2004, 08:28 AM	#98
MadTownMax ***erately knowledgable Join Date: Feb 2003 Location: Appleton, WI Posts: 2,750 Blog Entries: 1	I wouldn't go wider angle, you probably want as narrow of an angle as possible to "punch" as deeply into the water as you can, if you can fit about 600 LED's in there you could keep whatever corals you want, then all that needs to be seen is how much intensity is lost in deeper water.

03/17/2004, 08:38 AM	#100
sandisct Moved On Join Date: Mar 2003 Location: Singapore Posts: 133	new reading is much more encouraging!!!