I recently ran across this great article by local reefer Scott Fellman.
“If you’ve been “around the block” a few times in this hobby, you’ll often hear fellow hobbyists dispensing words of aquatic wisdom to anyone who needs it. You know, the usual stuff, like “you need to quarantine new animal purchases”, “Use common sense when stocking tanks”, Perform regular water changes”, etc. This stuff forms the “religion of our hobby: Core beliefs -or unshakable truths- which we pass on to all those who join our ranks. Fundamental, knowledge which we all feel that you need to have at least a working knowledge of to attain success in the hobby. It’s beautiful that most hobbyists are so willing to help out their fellow reef geeks by sharing this acquired wisdom- a true testimony to the quality of people in the aquatic world.
Interestingly enough, you’ll also see a large number of people out on the hobbyist message boards, websites, hobby conferences, and blogs, passing on “wisdom” that might be of dubious accuracy and origin- or, at the very least, information that may be generalized and passed on without experience in the given area. Classic examples are things like “You can’t keep that fish alive”, or “If you use that product, you’ll have this problem in your tank”. Often, the advice is dispensed with such authority and confidence that a typical hobbyist will not even question it.”
The entire article is available here: reefbuilders.com/2010/06/12/danger-regurgitation/