Ok there may be some science to answer my question but I would like to know what you (AA) think about what time you should do your water changes on your reef tank. Do any of you swear by any specific time like at lights on, midday, or before lights out? Maybe someone does midnight changes? lol. Also as I said in the beginning, if any of you have any fact or science as to what period of the day would be optimal for a water change and why the info would be greatly appreciated. Thanks AA