[dianezoo]

What do you call an extended period of time to keep the lights off and
at what point will it adversly affect the corals?

Ive just ond water change took the rock s out and picked Hair algea off and scrubbed them with a baby brush and did a water change and put them back but not im learly about turning off the lights and having the coral go south. sure about turning off the lightsmaj.