11-12-2011, 10:42 AM
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Originally Posted by futbalstud42
I just bought a light system with 4 T5 HOs. It has 2 actinic bulbs and 2 10000k daylight bulbs. the lights are wired in pairs. so I can turn on two at a time. So here are my questions
what is the purpose of the actinic light?? what does it do differently that the daylights?
should they be ran at the same time?
They are for coloration, they don't do anything. I don't even run them. With the right combination your corals show more color. That is what its used for, nothing else. If you run a good white light, you can run 4 white lights and keep higher lighting needs corals, and skip the actinics. I like 14k myself.
Most that have them run them one hour before white light and an hour after white light out, then moonlighting.