The Kessil Photoredox are a specialized LED spotlight which was designed with a very specific purpose and it’s not growing corals. As the name implies, the Kessil Photoredox lights are for driving chemical reactions that are catalyzed with strong light, especially in the blue end of the spectrum.
The Photoredox PR160 spotlights come in six different colors but what’s truly unique about them is that they are all primarily single wavelength light source with specific light peaks. While the peaks are fine tuned for chemical reactions, some of these also overlap with the fluorescence peaks of our corals.
Kessil essentially uses a combination of these blue LED light sources for our aquarium lights but it would be super cool to experiment with some of these narrow band light sources for highlighting specific fluorescent pigments. At $300 for 40 watts of power these are definitely not ideal for aquariums, but we think we could have some fun with the deeper blue versions of these lights, especially the 427nm and 440nm versions which are very exotic spectrum compared to most aquarium lights. [Kessil]