Just remember a small phrase::
FW is far cheap and easy, but Salt water is expensive and less forgiven. Doesnt matter how much you read until you take the plunge you know nothing.
Dont take it to heart ,but when people get in to this hobby they think they know everything, just do what is right for the little fishies...
it's the least we can do to accomate them for coming half way around the world for our viewing .....
mike