chinese led lights

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Zedar said:
That would seem to be pretty smooth.
Click to expand...

Manually, yes. Sometimes though in sunrise/sunset for example the light is programmed to change in brightness by up to 20 between an hour... say from 40 to 60%. It is an abrupt jump in brightness, as it does not ramp up to it slowly. You would have to edit the time points to make it a bit smoother, which I am going to try later tonight.
 
While examining everything yesterday over my tank, I noticed something interesting with my coral. My Duncans have started growing 3 new heads that I did not see previously, and my sole healthy SPS stick has grown a bit. Everything seems slightly bigger, although it is hard to tell without growth pics. Leds can definitely grow coral, although I am not sure if it grows quicker or slower than MH/T5. Growth itself is all I care about.

My water parameters have been much better, and algae has gone down greatly despite using red leds and warm whites in my Cree fixture. As long as your water is low in nitrate and phosphates, you don't have to worry about algae using a few reds/warm whites.
 
Just bought 5 of the new units from Evergrow.. very excited.

I modded bhazards layout a bit to suit my tastes. I like a slightly warmer
look and put in 2 reds.

attachment.php


Should have them in about 3 weeks. I'll post my thoughts when I get them.

I might become a US reseller for Evergrow if I like the quality.
Those concerned about dealing with China will have a place to buy them from
in the USA, someone to call in the US with questions or issues and I take
CC's directly. I run another web business so this is an easy extension.
Hopefully the quality will be great.
 

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bhazard451 said:
I like the Neutral and Warm Whites used. The only changes I would possibly make, are removing the cool whites, adding 2-3 reds, and maybe changing from 6 470nm blues to 4. 18k would probably need a few more RB than what I have.
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Which ones are the cool white?
 
FrEsHaZzBuRu said:
Hey guys, I've been trying to add more spectrum into my LED build and was looking into this: 3W UV 420nm-435nm with pink effect

Does anyone have a clue as to what this "pink effect" is? I'm thinking it may just be a tint to the lens? If so, will it effect the wavelength at all? The specs do state 420-435nm which is what I want. All I'm concerned about is adding the spectrum for coral pigment rather than the what color my tank will look.

Any insight is greatly appreciated, thanks!
Click to expand...

So no one can chime in on this? This thread was about Chinese LEDs, so I figured this was the best place to ask rather than start another thread.
 
FrEsHaZzBuRu said:
So no one can chime in on this? This thread was about Chinese LEDs, so I figured this was the best place to ask rather than start another thread.
Click to expand...

I don't think anyone here have tried the pink led colors in their tanks. I know I have nothing to say about it. I'm interested to know also...

The one... The only... Exterminatank!
 
FrEsHaZzBuRu said:
So no one can chime in on this? This thread was about Chinese LEDs, so I figured this was the best place to ask rather than start another thread.
Click to expand...

They look like standard Epistar 3W violets, but at 420-430. If it actually peaks at those wavelengths, it would be good to try.

The "pink effect" thing is just a buzz word for a Fiji Purple type color I'm guessing.
 
I have been watching this thread for a while, I wanted to use one of these lights as a test subject over my seahorse tank, and then if they work well, over my reef tank. My question is this....

While I like what your setup is Bhazard, I prefer the 18-20k look. Can you explain your layout a little better so that I can understand it. I am not sure what the 35k/65k lights are in your setup. When the layout is sent to Sam, do we need to use those numbers are is listing lights as CW/WW/NW acceptable. Also I would like some light in the violet ranges, perhaps 4 in the fixture to help make those floruescent corals pop.

Thank you ahead of time for the help.
 
After looking at them last night how do you like the 450's for the moon lights?

If the lights are going to be about 5 inches above the tank should I still go with 90 degree optics or a different lens or no optics?
 
phragger said:
After looking at them last night how do you like the 450's for the moon lights?

If the lights are going to be about 5 inches above the tank should I still go with 90 degree optics or a different lens or no optics?
Click to expand...

450s for moonlights are perfect. You can dim them down to 1% for a very faint moonlight. It automatically turns them off after 2am which I like too, and you can adjust the times they turn on/off.
 
Tmoriarty said:
I have been watching this thread for a while, I wanted to use one of these lights as a test subject over my seahorse tank, and then if they work well, over my reef tank. My question is this....

While I like what your setup is Bhazard, I prefer the 18-20k look. Can you explain your layout a little better so that I can understand it. I am not sure what the 35k/65k lights are in your setup. When the layout is sent to Sam, do we need to use those numbers are is listing lights as CW/WW/NW acceptable. Also I would like some light in the violet ranges, perhaps 4 in the fixture to help make those floruescent corals pop.

Thank you ahead of time for the help.
Click to expand...

For 20k, you need more royal blue, less white, and higher K whites.

If you are to use 6500k and 10k whites, it might be good to add 2-3 red too for better color. I only used 3500k warm white to try to increase red output without using reds themselves.

They can help with led color temps. They have a lot to choose from.
 
If the lights are going to be about 5 inches above the tank should I still go with 90 degree optics or a different lens or no optics?[/QUOTE]

What's your opinion about the optics?
 
phragger said:
If the lights are going to be about 5 inches above the tank should I still go with 90 degree optics or a different lens or no optics?
Click to expand...

What's your opinion about the optics?[/QUOTE]

Keep them. I would go no less than 90 degree. I tried 60 degree and didn't like them.
 
phragger said:
I noticed you used 470nm blues but no Royal blue which I understand is 440nm. Why?
Click to expand...

I used 450nm Royal Blues and 470nm Blue. 450nm is the peak you want to hit.

480-490nm Cyan is the optimal wavelength for another photosynthetic peak and coral color, but they do not carry them, so I used some 470nm.
 
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