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Old 05-25-2012, 11:22 AM   #1
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Leds vs metal halides for sps

I've read some articles and watched a few videos of coral growth and color with metal halides vs. LEDs. The most organized one was that of the YouTube poster mr saltwater tank. After comparing the results, it seemed the corals with leds looked more bland and generally less attractive then the metal halide covered tank's.

Could anyone explain why this is? I recently bought a 120w dimmable fixture that I love, but I'm hoping I won't be regretting it in the long run.
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Old 05-25-2012, 11:48 AM   #2
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Mh can simulate natural sunlight better. LEDs won't get the growth found with mh either. However- LEDs will keep the sps alive
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Old 05-25-2012, 12:07 PM   #3
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If I DIY an led strip, would I get the best color out of the corals? If so, are there certain diodes I should use?

I want the best for my sps, but I already have a little too much light on the tank. Is there any small mh that could be used in combination with it?

Thank you!
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Old 05-25-2012, 01:22 PM   #4
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I have noticed a lot of the DIY are a lot better quality. However- I'm not an electrician so I can't really help with diodes, etc. I can say this though- which such high wattage it seems like many of these DIY LEDs bleach your soft corals out
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Old 05-25-2012, 03:56 PM   #5
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My softies are fine so far, my acans have taken a toll though. The center of my red acan is now a greenish brown. I turned the light down and it's getting better though.
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Old 05-25-2012, 05:23 PM   #6
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I don't know about softies and sps...but my lps are doing great under my radions. My flowerpot budded off a buddy for me and the blue candy cane that was almost all dead or fully bleached has started to regain its color and swell up under the new lighting. Here in a couple of months once all of the projects on my tank are done and I'm no longer poor, the SPS will be arriving in my tank...again.
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Old 05-25-2012, 08:12 PM   #7
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Don't get me wrong. I love my Eco rays. My LPS bloom like crazy. However, I do have to keep all my euphillia at the bottom half of the tank.
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Old 05-25-2012, 08:20 PM   #8
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I have my torch halfway up, but my hammer is at the bottom under a ledge.
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Old 05-25-2012, 08:26 PM   #9
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Quote:
Originally Posted by Jlsardina View Post
Mh can simulate natural sunlight better. LEDs won't get the growth found with mh either. However- LEDs will keep the sps alive
That is highly debatable. I used metal halides for well over 15 years and switched to LED's about 8 months ago. My SPS corals have not slowed in their growth at all.
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Old 05-26-2012, 05:31 AM   #10
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Im having much success with Radions as well. I use the natural light mode set at 55% intensity in a rather shallow corals tank. My lps torch, hammer and frogspawn r thriving. Branching nicely. My Sps, Birdsnest as well as the cabbage r growing beautifully. I have a couple leathers as well. I won't say they love all this light. But they don't appear to be suffering. Nor are they growing, which suits me fine
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