Anyone sitting down with a good gardening book can be taken aback by the number of problems that could be met by any particular plant. Some are hardier and more resistant to disease than others. This is of course true for all life forms.
This is not intended to be a cover-all for aquarium coral problems. The subject would be far too large. However, an attempt will be made to consider perhaps the more likely troubles.
To avoid as far as possible any problems arising in the first place, there are four areas that need attention.