<a href=showthread.php?s=&postid=12732442#post12732442 target=_blank>Originally posted</a> by fittiger
Leaving the lights off for 4 hours is suggested for fish. This is so that they have time to examine their environment and settle in with minimal harrasment by any other inhabitants.
Invertabrates, especially delicate ones, should have a long slow acclimation to the tank. The primary purpose of this is they are far more sensitive to water chemistry changes than fish. Photoreactive/sensitive invertabrates should then further allowed to adjust fully to water chemistry before a change in lighting is added to the equation setting off more stress cues within the organism.
If it were my prized anemone that I paid a significant sum for I would want to let it adjust as slowly as possible. MANY don't do this and have no problems. This is just a suggestion to limit additional stress factors when they need not be there.
Pictures look beautiful, btw! I'm jealous I did not get it.