Ok so I introduce a new coral to my tank but i know that u have to give Them some time with lights off so how long should I wait to turn lights on because they can stress out if you dont give them some time to stabilized to a new tank
What kind of coral and what kind of lights are you moving it to? What kind of lights was it under before you got it? Where in the former tank waas it placed, and how does your set up compare? Not to :deadhorse: but not all coral have the same light requirements, with out more info you are not going to get an answer that really helps you care fr the coral properly
But be sure not to move it into a significantly brighter location right away. It you have stronger lights than its former home, either place it lower in your tank, or provide screening for some days (depending on how drastic the change).