UV leds. Is there any new information out there

[jrpark22000]

Aquastyleonline has bridgelux violets (420 nm)

Thanks for the link, they also offer 3watt 398nm

but it appears you are getting ~120 degree spread on the DIY fixture ....
.....By the way were these purple LEDs the 420nm Actinic Violet LED (from aquastyle), or the Epileds LED 3W Ultra Violet(UV) or something different?

From above posts #107 and#109,
"The LED's themselves are from led group buy. All 3 colors I have came with 60 degree optics."

 

[007Bond]

22000, have you got any of the tri-colored chips yet, and tested? Thanks---Rick

 

[jrpark22000]

22000, have you got any of the tri-colored chips yet, and tested? Thanks---Rick

Not yet. I'm going to start by adding violets. I've been using photoshop to compare the spectrograhs for photosynthesis, AI, and Phoenix 14k looking for the biggest return. Violets look to be the largest spike I am missing using AI. I'm thinking about a month before I have it operational. After some soak time I'll add the tri-led pucks.

 

[007Bond]

Thanks, I'll be watching or any updates---Rick

 

[jrpark22000]

I'll make sure and post an update once I get the solution up and running.

Here is some of the research material for anyone following for violet LEDs.

 

[djkms]

Have your tried lowering the DIY leds down some?

The AI Sols might be ok that high up, but it appears you are getting ~120 degree spread on the DIY fixture (just guessing this from the light spread on the wall). It looks to me that you are loosing the the majority of the light long before it reaches the tank... Thats probably why it seems to make a minimal impact. I personally would drop it down about 2 feet to see what it looks like.

By the way were these purple LEDs the 420nm Actinic Violet LED (from aquastyle), or the Epileds LED 3W Ultra Violet(UV) or something different?

All the LED's in my DIY fixture have 60 degree optics. There is some light spillage on the wall but a majority of light goes into the tank. I am already losing coverage on the edges of my aquarium with this setup. If I lower it anymore then I get even worse spotlighting. The leds were purchased from led group buy (cant link).
Wattage:
3w
Max Drive Current:
600 (500mA recommended)
Forward voltage (@ 700 mA):
Min 3.0v Max 3.4v
Light Intensity:
300mW - 320mW
Wave Length:
395nm-430nm
Viewing angle:
60° or 120°
Color:
True Violet
Star Size:
20mm

 

[joelespinoza]

All the LED's in my DIY fixture have 60 degree optics.

There is something wrong here, look at the lines I drew here, I drew a 90 degree angle and then followed the line of your light as it hit the wall, if that angle is 30 degrees (at least on the greens) im a monkeys fricking uncle:

I think some manufacturer is playing fast and loose with their measurements, because if that is less than 50 degrees I would be really suprised. Its possible the picture is distorting it, but I doubt it is that much.

The True Violets are clearly the exact same ones I have, I got mine from groupbuy too.

 

[Jay1982]

Aquastyleonline has bridgelux violets (420 nm)

You are a king among men.

 

[Thatgrimguy]

Supplements on:

Supplements off:

A few months later...

 

[rogergolf66]

Everything seems to have turned brown a few months later?

 

[Thatgrimguy]

Everything seems to have turned brown a few months later?

I think it's just the way the pic was edited. This is a less edited version of the same photo. I have been extremely happy with my results from adding green, red and Violets. You can see all the photos at www.photobucket.com/210g

 

[fewponds]

Any updates on the effects of adding 420nm leds?