Originally Posted by ucantimagine
So to bottom line this, if we can: Is LED made specifically for aquariam lighting better than, equal to or not as good as a comparable T5 HO light?
From what I have read the answer is probably 'better.'
One benefit of LEDs is that they can mix different spectrum LEDs in one fixture to target specific spectrums of light whereas in flourescent lighting they have to coat the bulb with a specific phosphor to get a certain wavelength light out of the bulb and I think that there is a limit to how many different phosphors that they can efficiently use.
That doesn't even address secondary features like energy savings, dimming features, light penetration, increased life span, ability to create 'shimmer', etc.