Led help

[puffer21]

Do coral need the white leds to grow? I have 2 programmable full spectrum leds they are 120 watts a piece, on a 90 gal tank. What would be the best %s for growth. I like the look of 100% actinic and 10% white, is this enough white for good growth? I already made the mistake of bleaching and I am afraid to do it again. Can anyone help! Thanks

 

[NanaReefer]

I ran my tank with 50% blues only for 4wks and it didn't faze my corals at all. I'm keeping all LPS & 1 SPS Birds Nest.
Now I run whites at 30% max and blues 50% max. Thinking of turning the whites down to 20-25

There has been no real difference in my corals with or without the whites. But to my eye they look more washed out with the white lights on.

 

[SantaMonica]

The lighting experts will be able to help a lot, but for basics, blue seems to work most of the time.

 

[clownfitch]

From my experience you get better growth and color from the 450ish nm spectrum (blue) than white. I just dilute the blue with white during the day for esthetics.

 

[Reefing Madness]

Feature Article: Light in the Reef Aquaria ? Advanced Aquarist | Aquarist Magazine and Blog

 

[Brianstraker]

I run 2 of the eBay full spec leds on.my 90. I run blues 100% and the whites abt 60-70%. I have mixed reef from acros to mushrooms. Everything doing great.