Greenbean and Peter,
Thanks for the supporting information - excellent input, as is Travis' point. I think we do try to absolutize things a bit too much in our hobby - it's a fuzzy balance between reality and trying to be responsible keepers.
Chemesgh: is that another way of saying "Never underestimate the power of stupid people in large groups"?
We do tend to take comfort in the old and familiar - but we often err when we take in uncriticized orthodoxy, no matter how well intended or accepted. Look at how many changes scientific models have gone through in the last 50 years. The ability to change and rethink
based on research is good science - and good reefkeeping.