Anyone Thinking of Dumping LEDS and going back to Halides

[Fredfish]

Thanks for the AA link oreo. I somehow missed that article.

Interesting addition to that statement." See the A. millipora section..
Can't remember if advanced Aquarist links are censored though..
...

The section on Milipora tells us little about that coral's relative growth under LED vs LEP because two of the samples were "scramled".

Still, its interesting to see how different corals respond to different light treatments. Its also nice to see someone doing controlled studies on the topic.

 

[karimwassef]

didn't I say LEP was coming...?

also.. confirms that a hybrid of technologies is best.

 

[rappyfly]

I have this stylo in my chinese black box Led for more than a year. LED can keep bright pink, but no growth. It took off under 14500K Giesemann.
August 14, 15


Feb 25, 16



I am keeping hybrid lights.

June 13, not so much


In new tank April 14 and looks the same


Nov 14.

 

[Johnseye]

I can't think of anything that would count MORE since that is precisely a range of lighting that LED's can't accommodate.

Are you certain LEDs can't recreate an actinic spectrum? I think they can create a spectrum that brings out the florescence in corals better than actininc. Actinincs aren't used specifically for growth, they're used for coloration.

 

[Johnseye]

New whitepaper out from Radion. The study was done by Reef Wholesale. They essentially mirrored T5 AB+ and ABS lights, Phoenix 14k MH lights and created an LPS specific spectrum similar to the T5s. The schedules are available for download.

Side by side pictures of MH vs LED after 16 weeks.

Here's a link to the whitepaper.
Ecotech Radion Whitepaper

 

[DavidinGA]

New whitepaper out from Radion. The study was done by Reef Wholesale. They essentially mirrored T5 AB+ and ABS lights, Phoenix 14k MH lights and created an LPS specific spectrum similar to the T5s. The schedules are available for download.

Side by side pictures of MH vs LED after 16 weeks.

Here's a link to the whitepaper.
Ecotech Radion Whitepaper

Wish it had more comparisons....

 

[markalot]

New whitepaper out from Radion. The study was done by Reef Wholesale. They essentially mirrored T5 AB+ and ABS lights, Phoenix 14k MH lights and created an LPS specific spectrum similar to the T5s. The schedules are available for download.

Side by side pictures of MH vs LED after 16 weeks.

Here's a link to the whitepaper.
Ecotech Radion Whitepaper

I read that when linked from another thread. Any idea why growth and color for an acropora wasn't included? Seems to be a glaring omission. Detailed results were all for corals known to do pretty well under LED.

 

[mhucasey]

I read that when linked from another thread. Any idea why growth and color for an acropora wasn't included? Seems to be a glaring omission. Detailed results were all for corals known to do pretty well under LED.

Yes, they grew acropora but didn't include the results. Hmmmm.

 

[Johnseye]

Yes, they grew acropora but didn't include the results. Hmmmm.

No Acros. To get specific, no Millies. I'm sure there's a reason. Some corals do well under LED and some don't. Even when reproducing a T5 or MH spectrum.

 

[Aqualund]

Are you certain LEDs can't recreate an actinic spectrum? I think they can create a spectrum that brings out the florescence in corals better than actininc. Actinincs aren't used specifically for growth, they're used for coloration.

Some corals do well under LED and some don't. Even when reproducing a T5 or MH spectrum.

Absolutely certain LED's cannot recreate the sub 450nm spectral plot of T5's or MH. They can get some specific frequencies, but only a few, and specific.

"Actinincs aren't used specifically for growth, they're used for coloration."

With regard to acropora, I absolutely disagree.

With regard to some corals doing well and some not...well that is exactly the point of this debate.

 

[Aqualund]

I have this stylo in my chinese black box Led for more than a year. LED can keep bright pink, but no growth. It took off under 14500K Giesemann.

This has been my experience with stylos under LED only as well.

 

[Cyberdude]

One year of growth under hydra 52

April 20, 2015


Today


Leds grow coral. My water has been a mess so not much sps yet. It's possible that some do better than others. But I've seen sps from the Great Barrier Reef spawn under hydra52s. Granted it was marine biologists in the equation and water pumped in daily from the ocean.

 

[Cyberdude]

Spawn. Under spring full moon. Nutso.

 

[karimwassef]

I supplement with 395nm and 365nm 3W LEDs

 

[jda]

The Ecotech paper is perfect for them. They people buying their lights in general seem to miss the point that some coral do fine and that not all coral is equal. ...so of course they can pick and choose the coral that do well for their presentation. They compare birdsnets, montis, etc. and the typical Ecotech buyer is going to assume that this means all SPS since they are likely not to know better. They are targeting the inexperienced.

Many have grown porites, birdsnet and stylo under 100W incandescent light in a fuge with no issues. ...but the people who know this are not likely Ecotech customers.

 

[oreo57]

The Ecotech paper is perfect for them. They people buying their lights in general seem to miss the point that some coral do fine and that not all coral is equal. ...so of course they can pick and choose the coral that do well for their presentation. They compare birdsnets, montis, etc. and the typical Ecotech buyer is going to assume that this means all SPS since they are likely not to know better. They are targeting the inexperienced.

Many have grown porites, birdsnet and stylo under 100W incandescent light in a fuge with no issues. ...but the people who know this are not likely Ecotech customers.

you know with a "little" more effort you could get even more "elitist"...

 

[jda]

Did you google that, or did you form an opinion of your own?

 

[oreo57]

Did you google that,

Why? jda and elitist come up often???

 

[Aqualund]

One year of growth under hydra 52

April 20, 2015
View attachment 343420

Today
View attachment 343421

Leds grow coral. My water has been a mess so not much sps yet. It's possible that some do better than others. But I've seen sps from the Great Barrier Reef spawn under hydra52s. Granted it was marine biologists in the equation and water pumped in daily from the ocean.

Looks great...but to be fair, seriataporas grow like weeds, and the fact that yours only got that big after a year is another indication of reduced growth rates.

I have the same coral under a T5/combo that started the same size and it is now twice the size of yours in six months.

The mother colony I had of this coral I had under LED's only for two years and it would grow slowly, then RTN every 6 months for something and I'd keep trimming back and keeping the good parts. I moved it to my coral farm under t5's and I have a colony the size of a serving platter that just keeps growing with no losses.

To me it seems like very strong evidence. But I understand that its not for others.

Also, these spawning corals under hydras...Im pretty sure I saw that video too, and I think they used the LED's as supplementation, but not the primary light source. I could be wrong though. can you provide a link to this video?

 

[Wazzel]

I have yet to run into anything I can not grow. There have been some that took a real long time to get acclimated, but one they started all was good.