Wanted to know was dehydrated lime used to bring up Calcium

[cantagious]

Wanted to know was dehydrated lime used to bring up Calcium this is what my feed store sells

[bertoni]

Lime adds both calcium and alkalinity, and it's quite high in pH, so calcium chloride is much better for raising the calcium level in a tank. Lime makes a good daily supplement, though. This article might help:

http://reefkeeping.com/issues/2005-01/rhf/index.htm