refugium lighting for corals

[Kaido]

Another thing to consider is the photoperiod. Even with great lights, if you're blasting them for too long or too short, they won't thrive. I run mine for about 10 hours, with a ramp-up/down period.

[learns]

Good point. I've been running my lights for 12 hours straight, and some of my corals look stressed. Gonna cut it back to 10 and see if that helps.