460nm vs 420nm PCs

[krustofsky]

what are the pros and cons of 460nm PCs as compared to the standard 420 nm PCs? do corals respond to either better, does either one cause more algae growth? If it is all personal preference, I like the 460's. Who do you guys think?

[drummereef]

Mmmkay... I like the 420's, so there! :D No really, some say the 460s make the corals fluoresce more, but the debate it out. I haven't personally noticed a difference in algae growth either way. And yes, we are the only two people on planet earth still using pc lighting. :)