[lfsmarineguy]

there's more to it than "discuss". There are many different sps and while some may color up under certain conditions, others may bleach out and die. The easiest solution is to know where the coral was collected from specifically (depth, water temp, water movement, etc.) but this is often impossible. There are a few broad statements that do apply to most sps though. Most sps come from high light, high flow, low nutrient parts of the reef (close to the surface). Out of 1,000 reefs studied in a ummm....study showed that the average temp on wild reefs was 82 and change and the average salinity was 1.026 and change (from what I understand the study was a global test and not just the pacific). I forget what book this was in but I am almost certain it was one of Eric Borneman's coral books, I think the one with the green anchor on the cover. So, rather than try to make each individual coral happy by changing tank parameters constantly, the best we can do is try and keep our tanks within a certain corridor of tolerance for our corals.