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Old 06-25-2010, 03:11 PM   #41
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alright i missed the t5 part my bad.. and i have a feeling t5s will be around for quite a while. and wow im pretty sure people could tell it was a joke. and its his choice in the long but he also needs to know about other options and that leds havent been around as long as others so its not as well known how well they will do..
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Old 06-25-2010, 03:13 PM   #42
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Quote:
Originally Posted by Jimbo7 View Post
http://ledsupply.com/docs/cree-xre.pdf
there is some info on the specifics of the wavelengths.
thanks for that. now since you do know more about the led side... the cool white will fluxuate between 5k and 10k? cause the 5k has me worried
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Old 06-25-2010, 03:13 PM   #43
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The problem with LEDs are that they need to meet a better color temp. tolerance than what the majority of the population will be using them for.

Manufacturers arent going to put much effort into improving their LED tolerance unless reef tanks can rival every day people looking to simply illuminate a room.

LEDs that meet tight color tolerances will no doubt be costly to us, always. Thats just the way things go sadly. 5000k-8000k is just fine for the millions of people that will just be lighting up their kitchen. So thats millions compared to the thousands that will be lighting up their corals.

Simple solution...Get EVERYONE into reef tanking!:p

Matt
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Old 06-25-2010, 03:17 PM   #44
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i dont agree. lol
Now I know how you "lostnemo"

Joking aside, if it was a fish only tank you could probably get away with a hydrometer and set your SG to around 1.022. However, the OP has mentioned having a reef tank and even more specifically reference to sps. So I will say it again. A refractometer is a must.
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Old 06-25-2010, 03:19 PM   #45
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Now I know how you "lostnemo"

Joking aside, if it was a fish only tank you could probably get away with a hydrometer and set your SG to around 1.022. However, the OP has mentioned having a reef tank and even more specifically reference to sps. So I will say it again. A refractometer is a must.
haha, and well my reef has done fine with a hydrometer. and well that is true with sps. so this is the one time i will agree
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Old 06-25-2010, 03:21 PM   #46
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I'm gonna need someone to confirm this, but the range of K doesnt fluctuate randomly. It is dependent on how much power you run through them. LEDs are made for dimming and being controlled and that is facilitated by the amount of power through them. When they are at full power their wavelength is stable.
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Old 06-25-2010, 03:22 PM   #47
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MRG02D

Don't be so concerned about the color spectrum. Out of everything I have read from experienced reefers with pictures to prove their success, that is not an issue. In fact they are reported to look in the 20k range when you have the correct combo of white and blue.
IMO, recommending PC lighting is like recommending a VHS player.
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Old 06-25-2010, 03:23 PM   #48
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DIY LEDs - The write-up - Reef Central Online Community
this is also a great site that show the entire DIY setup along with FTS and PAR readings. All those are without optics as well. If he had put optics on those i would expect them to double if not more.
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Old 06-25-2010, 03:24 PM   #49
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Don't be so concerned about the color spectrum. Out of everything I have read from experienced reefers with pictures to prove their success, that is not an issue. In fact they are reported to look in the 20k range when you have the correct combo of white and blue.
IMO, recommending PC lighting is like recommending a VHS player.
must...give...more...repppp
it wont let meeee.
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Old 06-25-2010, 03:26 PM   #50
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okay after reading the write up and by what jimbo has said.. im on the led side. lol sorry jimbo
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