I use both. Mr_X and I have debated this a lot. The red and green are accent lights for your eye, not the coral. The UV
leds however have shown to be of actual benefit both to color and growth of stoney corals especially. I also love the extended blue frequency that enhances the corals fluorescence during evening lighting. But there is no doubt white/blue panels also work fine.
Leds, especially high power ones create a lot of localized heat. That heat is what reduces their lifespan. You either need a big heat sink, fans or both or you don't have high power leds long. It all depends on number and wattage of the leds. I have seen fanless fixtures at the LFS
and they were hot to the touch. I didn't like that. My RapidLED fixtures are cool to touch so I don't mind the fan.
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