DIY LEDs - The write-up

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While we're talking about DALI and possible drivers for this system, what are you thinking about this Der Willw Zur Macht or Kcress?



Major overkill for lighting our tanks, at this point anyway. That stuff is great for things like American Idol stages but it's a lot to add for something that normally will spend its life at one setting. You may have noticed some people have to back off their light to prevent coral bleaching. This infers that coral etc. like a certain amount once they get acclimated. Having a system to really move the brightness around seems counter to that.

It would certainly be fun to mess with though.:bigeyes:
 
I'm heading towards LED's also, great thread, it's going to be a pain to read through all this though, don't even know where to start.
 
Glad I have been following this thread and found it. MontyJack you have been a great help with the 1-10v dimmer solution and I would not have known such a thing existed without reading your post.
 
I'm heading towards LED's also, great thread, it's going to be a pain to read through all this though, don't even know where to start.

Welcome to RC!

Start with the very first page of this thread... I mean the original. Not this split of it. Read the first 3 or 4 pages. That gives you a whole bunch of the Big Picture.
 
Major overkill for lighting our tanks, at this point anyway. That stuff is great for things like American Idol stages but it's a lot to add for something that normally will spend its life at one setting. You may have noticed some people have to back off their light to prevent coral bleaching. This infers that coral etc. like a certain amount once they get acclimated. Having a system to really move the brightness around seems counter to that.

It would certainly be fun to mess with though.:bigeyes:

I agree with you. I had a little argue on a German forum about that subject. I think that it is too sophisticated and too expensive to control just your RB and CW strings and maybe one moonlight string of LEDs.
 
My heat sink runs around 100. Afte two hours I tried to find how jot it was. I was luck that I have an infrared that holds the maximum. Even the LEDs were under 110 degree Farenheit. I am sure the inside of the LED is hotter, but I think anything heatsink running around 100 degree Farnehit or less will be fine. Hotter will work it just may shorten the LED life.
 
My heat sink runs around 100. Afte two hours I tried to find how jot it was. I was luck that I have an infrared that holds the maximum. Even the LEDs were under 110 degree Farenheit. I am sure the inside of the LED is hotter, but I think anything heatsink running around 100 degree Farnehit or less will be fine. Hotter will work it just may shorten the LED life.

Dang. Well, I don't have a infrared, but it's almost at the point where I'd have to take my hand off of it. Of course, that's after a full day's worth, and it seems to get only barely there on a hot day. Other than that idk. It's worrying me.
 
If it were 120 F I don't think you could keep your hand on it. 110 F water is uncomfortably painfully hot. Water has a higher heat capacity & better thermal transfer than an Al sheet, so I'd guess you're between 110 and 120 F, prob closer to 110.
 
If you can keep your finger on it you're OK.

And I mean the bulk area of the heat sink not the edge of a fin. :rolleyes:

+1

I measured mine is at 97 with two Cool Tron fans on a 24" heatsink and 48 LEDs Driven with the Mean Well CLG 150-48A

Bill
 
Hey, I have a 60g hex and it's about 24" or so to the sandbed. I have read through the thread. Well, not all of it but a lot of it. I have a hard time finding where i left off in reading. Anyway will the leds be strong enough to keep sps on the bottom?
 
You can use LEDs to fry SPS on the bottom of a 24" deep. You can eclipse sunlight. It just depends on the LEDs, the drive, and the optics.
 
Thanks for the response. I don't have the figures wrote down, but I was going to do like 1 led per 15"sq. I think it was like 30 couple leds. I'm not sure on the optics I was going to use. By the way it would be better to go xpg than xre right?
 
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