hackteck ... I use Auto setting, no flash ... and a home made tripod (usually a bunch of movies stacked up)! You just have to keep trying until you get the right angle!
Sharkman - usually if corals that are low-mid lighting are placed high up in say Metal Halide lighting it can cause them to bleach out or turn very light in color, sometimes white. They can be cared for meticulously and nursed back to health but from what I have seen and read most of the time they end up dieing.
God grant me the serenity to accept the thing's I can not change, the courage to change the thing's I can and the wisdom to know the difference!
R.I.P Walena K. Cox
7/7/62 - 8/11/2002