I hate to say it.....

darren24

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But the LED's that I have (AI SOL Blue) are just not as good (for me) as the metal halide I used to run. Granted that was a different tank but I use the same dosing, water change, etc., that I used for years before with the MH. My LPS (Chalices, acans, favias) do well but grow slower. My sps is just either not growing and in some cases just wasting away. I keep all of my parameters in line so I know that it is not the cause. I do like the lightweight design and the color pop of the LEDs along with no heat issues. I think that if I could start over I may go with a combo MH unit. Just my thoughts...
 
I just slapped two 400w Radiums on my tank after a year of suffering with the AI SOL blues. It's only been two weeks and oh, how glorious it is! Come on back home brother!
I run the MH for 4 hours then run the AI's at a REALLY super blue after that for viewing. Really the best of both worlds having both on the tank.
 
Seth The Wine Guy;775825 wrote: I just slapped two 400w Radiums on my tank after a year of suffering with the AI SOL blues. It's only been two weeks and oh, how glorious it is! Come on back home brother!
I run the MH for 4 hours then run the AI's at a REALLY super blue after that for viewing. Really the best of both worlds having both on the tank.
That's the route I'm taking as well:up:
 
MH is..

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That makes LED....
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I want to see plasma lights take off

The spectrum is ugly, but I bet it will grow things
 
I figured LEDs are more like...

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They're cool, they're hip, and if they don't turn on, whack em a few times.

'AAAYYYYY!!!
 
My intent was not to imply that LED's would not grow coral in a tank. They will. They also make the coral look better. I am just not getting good growth and if a coral gets damaged for some reason the survival rate under the LED's is poor. Under halides I used to bring corals back from poor condition.
 
That's the same problem I was having with the AIs. There was no chance a stressed or damaged coral was going to recover.
 
Darren24;775927 wrote: My intent was not to imply that LED's would not grow coral in a tank. They will. They also make the coral look better. I am just not getting good growth and if a coral gets damaged for some reason the survival rate under the LED's is poor. Under halides I used to bring corals back from poor condition.

I agree with you. That my be an aspect of LEDs that no one really noticed or pointed out until now. Slow growth may also mean a lesser ability to repair and bounce back from injury, whether it be from mechanical injury or poor water conditions?
 
Acroholic;776270 wrote: I agree with you. That my be an aspect of LEDs that no one really noticed or pointed out until now. Slow growth may also mean a lesser ability to repair and bounce back from injury, whether it be from mechanical injury or poor water conditions?

I (personally and without any scientific testing to back me up) attribute this to the lack of UV radiation and subsequent depletion of vitamin D.
 
UV from SE metal halides gets filtered out by the bulb glass though, and on DE bulbs it gets filtered by the pendant glass, right? So doesn't that equalize that aspect of Halide vs LED?
 
Acroholic;776280 wrote: UV from SE metal halides gets filtered out by the bulb glass though, and on DE bulbs it gets filtered by the pendant glass, right? So doesn't that equalize that aspect of Halide vs LED?

You're right it gets "filtered" - not absorbed.
There is a significant amount of UV radiation that still passes the glass shields.
Most of the harmful UV is being filtered out though - I measured some light sources against the MU-200 from Apogee http://www.apogeeinstruments.com/UV/">http://www.apogeeinstruments.com/UV/</a>)
and the results were MH&gt;T5&gt;LED
 
<span style="color: black"><span style="font-family: Verdana">I am making the jump to LEDS myself.</span></span>
<span style="color: black"><span style="font-family: Verdana">Everyone has different objectives and priorities with their set-up.</span></span>

<span style="color: black"><span style="font-family: Verdana">In addressing the OP, it seems the acclimation process from MH to LED is <u>very</u> critical. </span></span><span style="color: black"><span style="font-family: Verdana">If not done properly could very easily stunt the growth of the coral.</span></span>

<span style="color: black"><span style="font-family: Verdana">#1 priority for me is the MH HEAT.</span></span>
<span style="color: black"><span style="font-family: Verdana">These halides are just cooking the room I have my display in. Not to mention my water temp is borderline needing a chiller.</span></span>

<span style="color: black"><span style="font-family: Verdana">Growth? Sure I want growth...but I am patient. </span></span>
<span style="color: black"><span style="font-family: Verdana">I’m willing to sacrifice speedy coral growth for a room temp I can enjoy my display without the old lady wearing me out about how hot the room is.:mad2::moderator:</span></span>

<span style="color: black"><span style="font-family: Verdana">Although…seems there is some debate about LED’s and coral growth.</span></span>
<span style="color: black"><span style="font-family: Verdana">I haven’t gone through all of this, but it seems like a good read on RC.</span></span>
Enjoy!
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