What kind of salt

[Aquattro]

Originally Posted by xtreme

A reactor is only one method of delivering calcium and IMO wouldn't be necessary for a new tank.

Agreed. There are lots of ways to dose Ca/Alk, and it's not something to worry about for some time. In the beginning, once you have corals that are growing, water changes will suffice. After that, several commercial or home made 2 part products are available.
Once you have a tank full of corals and you can't keep up, you can look at some of the automated methods of dosing.