Bought new led light fixture from China.

White light is made of a mixture of red green and blue.mix them and you get white. By having varying whites you get different peaks of different colors, such as your reds and greens and such. That's my understanding. Just look up a spectral analysis of different kelvins to see it visualized.

Right, but if the red/green/yellow spectrum aren't really necessary for coral growth and health I guess I don't need to worry about mixing various whites..
 
It's not that they aren't necessary it's just a red led isn't if a red peak is covered in the white. Photosynthesis happens on a broad range of wavelengths and covering the optimal peaks is vital. If you look up spectral charts of say the sun than you will find it has every color from uv through the visible spectrum. It's just a way to have broader field of wave lengths emitted, I'm sure you could do all cool white and royal blue like when less first started but in terms of evolution of LEDs I think broad spectrum is where we are. Look at the most popular fixtures radions razrs and the like all employ multile white spectrums as well as colors uv blue royal blue and so on.
 
hey gillguy, looking at buying the s300 for my tank (it's just under 5ft), it's 147cm long and 46cm wide and using the legs with this LED unit the LED's would be roughly 76cm from the sand bed. Oh also, with the tank being narrower than most (roughly 46cm or 18" as opposed to 24", my rock layout is quite central / slightly back and my corals are mostly central or out front on the sand)

I was thinking of using your layout i've attached, what optics would you reccommend for my tank dimensions?

Also after having this layout for a while would you change it now? Ie, remove the red/green more/less RB to B etc

Just want to make sure I get it right. I do like a nice blue/purple look but want good growth to go with it.
 

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It's not that they aren't necessary it's just a red led isn't if a red peak is covered in the white. Photosynthesis happens on a broad range of wavelengths and covering the optimal peaks is vital. If you look up spectral charts of say the sun than you will find it has every color from uv through the visible spectrum. It's just a way to have broader field of wave lengths emitted, I'm sure you could do all cool white and royal blue like when less first started but in terms of evolution of LEDs I think broad spectrum is where we are. Look at the most popular fixtures radions razrs and the like all employ multile white spectrums as well as colors uv blue royal blue and so on.

Right, sun has the broad spectrum any artificial light cannot reproduce. Red is one of the light spectrum where photosynthesis occurs on plants. I also read in several places that what corals need for photosynthesis isn't the same as plants - and most of them don't get the red spectrum due to the depth they are located.

Radion and other high end fixtures appear to provide very pleasing and natrual color (at least those appear to be available) but there's still very little proof that these fixtures perform better than cheaper or DIY LED fixtures in terms of coral health and growth (particularly SPS).

I'm just trying to better understand what corals really need and come up with most optimal LED configuration for coral health and growth (SPS), more than just looks.
 
anyone able to answer my questions above, want to place an order but not 100% sure on what optics for my tank dimensions? Was thinking 90degree with the reds in 120?

Also would you swap out some of the blues for royal blues or uv etc or is it good colour balance as is in the custom layout I attached? I do like a more blue/purple look (think 20k radium halide) but as above want to be able to grow my corals! lol

Thanks
 
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hey gillguy, looking at buying the s300 for my tank (it's just under 5ft), it's 147cm long and 46cm wide and using the legs with this LED unit the LED's would be roughly 76cm from the sand bed. Oh also, with the tank being narrower than most (roughly 46cm or 18" as opposed to 24", my rock layout is quite central / slightly back and my corals are mostly central or out front on the sand)

I was thinking of using your layout i've attached, what optics would you reccommend for my tank dimensions?

Also after having this layout for a while would you change it now? Ie, remove the red/green more/less RB to B etc

Just want to make sure I get it right. I do like a nice blue/purple look but want good growth to go with it.

That layout will work fine. It's what I have on mine. You could remove the red and green and add RB's. 90 degree optics will be fine with the fixture at that height. However, raise it a couple of inches more and you could use 60%.
 
Thanks mate.

In retrospect what do you reckon would give the most pleasing colour to the eye? The green/reds in or RB instead?

I do like the very blue/purple look.

Can't really raise it any more as I need to use the extendable legs

Meant to ask also, if going with the 90 degree lens and I do get the red/greens should I put 120 on those ones?
 
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Thanks mate.

In retrospect what do you reckon would give the most pleasing colour to the eye? The green/reds in or RB instead?

I do like the very blue/purple look.

Can't really raise it any more as I need to use the extendable legs

Meant to ask also, if going with the 90 degree lens and I do get the red/greens should I put 120 on those ones?

If you like the purple/blue look get RB's instead of red/green. If you get Red, not so much the greens, get at least 90 degree but 120 would be best.
 
Hello Gillguy,

What a nice tank you have! Congrats!

I'm ready to buy a Malibu S300 Led light with the same layout as yours.
The only thing I'am hesitating about is what lenses to use...

My tank measures 150cm (59 inch) long x 60cm (23,62 inch) deep x 55cm (21,65 inch) water height.
Knowing my Led light will be approx 30cm (11,81 inch) above the water surface.

Personally I was going tu use 60° lenses on all led's except from the red ones. (90° for these)

But Kevin from Ledzeal told me to go for 120° lenses on every led.

What is your opinion?
Thank you and greetings from Belgium!
 
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I can't decide wether to get the red/greens or rb lol. Hard to tell how they look from your video etc lol

Anyone got any pics or vids of these LEDs without the red green?
 
Sorry to be a pain gillguy, but can you explain what the red greens add to the overall aesthetic of the tank? What sort of look does it give in this combo?

I want to try them but don't want to regret not going rb
 
Sorry to be a pain gillguy, but can you explain what the red greens add to the overall aesthetic of the tank? What sort of look does it give in this combo?

I want to try them but don't want to regret not going rb

I'm on the same boat and initially thought of not including any red/greens but considering I have several orange montis I may include more red/greens than the layout floating around - thinking of at least 2 green and 2 red in each 24 LED panel.
 
Sorry to be a pain gillguy, but can you explain what the red greens add to the overall aesthetic of the tank? What sort of look does it give in this combo?

I want to try them but don't want to regret not going rb

Not really used by corals for growth but it does add pop to your red and orange corals and fish. Too many is a waste but a few will add color to tank. Some don't like them despite most high end units now carrying them. I like the look but no more than one per 24 led cluster.
 
Will give them a go, might ask for some rb chips incase I don't like them.

Should I put greens on 120 lens too or 90 like the rest?
 
Not really used by corals for growth but it does add pop to your red and orange corals and fish. Too many is a waste but a few will add color to tank. Some don't like them despite most high end units now carrying them. I like the look but no more than one per 24 led cluster.

I don't know about red other than reflection but it appears green spectrum is used by many corals for color (not growth) and via florescence the corals emit orange/yellow/red after absorbing green light.. based on some charts I saw here on RC.
 
i have a 120 gallon tank 72" long 20" tall 18" wide, Im looking at getting 2 s200. probably hang the fixture 6-10" above the water so i was wondering what lenses to use on the blues/whites and also the green/reds? Also can you specify what channels have what colors when placing an order?
 
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