Fine tuning reefi duo spectrum

[b4tn]

I remember reading an article sometime back, or it may have been a BRS video that basically said we could adjust lighting to our visual appeal but have the spectrum all wrong for coral. That’s one of the beauty’s of halides and T5’s you just put the bulb in and go. My goal is to get these lights adjusted and stop messing with them and I am getting very close but had some questions regarding look vs spectrum. I started off with the default SPS profile which at peak looks like this

Based on my par readings it’s right where I wanted it but I was not super happy with the look. It’s a very bright natural looking light but really brings out browns and other uglies stand out. I spent a good hour messing around with different combos and came up with this

Basically I lowered the cool white to give it a bit more blue but not too much blue. This makes the tank a nice clear blue. The browns did not stand out anymore but it seemed dim. I have not really messed with the lime so I raised it and dang! It’s like it supercharged the light and made a very crisp slight blueish tint. Everything fluoresces but it’s crisp bright light.

So my question is does the second one with all the lime cover all parts of the spectrum with cool white so low? Is there a draw back to running lots of lime?

 

[Bpb]

The rebel es lime diode doesn’t pump out a bunch of blue so it won’t have the same effect as raising a white diode. That is the beauty of it. It’s a broad spectrum green diode that will increase the overall brightness of a tank without adding a dangerous amount of par. I am a big fan of that diode for that reason. You can brighten up a tank without hurting anything.

 

[SeaDweller]

The rebel es lime diode doesn’t pump out a bunch of blue so it won’t have the same effect as raising a white diode. That is the beauty of it. It’s a broad spectrum green diode that will increase the overall brightness of a tank without adding a dangerous amount of par. I am a big fan of that diode for that reason. You can brighten up a tank without hurting anything.

What do you mean it’s broad spectrum? Shouldn’t it only produce light in that wavelength?

btw, the human eye is most sensitive to wavelengths 550-565 nm, which is why things appear brighter with this diode, so bpb is very correct in his statement.

 

[Bpb]

What do you mean it’s broad spectrum? Shouldn’t it only produce light in that wavelength?

btw, the human eye is most sensitive to wavelengths 550-565 nm, which is why things appear brighter with this diode, so bpb is very correct in his statement.

it’s advertised as a white appearing diode, but being low in red and blue end color and heavily covering the green and yellow range. It can add significant visual Brightness But has extremely low PUR. Allowing the user to have a more natural daylight period without the risk of burning things

 

[oreo54]

it’s advertised as a white appearing diode, but being low in red and blue end color and heavily covering the green and yellow range. It can add significant visual Brightness But has extremely low PUR. Allowing the user to have a more natural daylight period without the risk of burning things

I believe "technically" it was created to replace inefficient green diodes and create a "better" Red/Lime/Blue white..
Never saw one in reality.. but it doesn't look "White" per se..

Lime-Green LEDs Encourage Color-Tunable Lighting

Solutions from suppliers, including Philips Lumileds, that overcome the downsides of green LEDs and turn RGB LED lighting into a practical proposition.

www.digikey.com

There is a bit of cyan in the above btw..

Warm White, Neutral White, and Cool White? Help clear the haze!

Can someone please explain to me or point me in the right direction to better understanding which is better. I see a lot of people using cool white leds and yet read an article stating cool white led is useless in a reeftank. I also have read that the neutral whites 5k are the better leds to...

www.reef2reef.com