light required by diferent corals

[Aquattro]

Steve, Eric Borneman wrote an article in this month's Reefcentral Online mag....it describes the locales that corals are collected from. Any given species of coral can originate in drastically different conditions. So you can say a species of say, acro, needs a quantitative amount of light. It depends on where they came from, the amount of consumed food available, etc. I'm sure there is a minimum required to sustain life based on photosynthetic nutrition only, but I would suspect that there is no table describing these values.
so yes, your question is way out there :D