High Energy Visible (HEV) light refers to the part of the spectrum from 380-530nm, which includes our beloved blue and royal blue LEDs as well as the violet, indigo, cyan and near-UV LEDs which are not yet widely used. With many reefers currently running heavily blue lighted aquariums and the adoption of LEDs and their … Continue reading Could high energy visible (HEV) light be damaging to corals?