that has been in an Aquarium setting long enough to allow the decaying matter on the rock to be consumed by Bacteria. This curing time makes the LR
more expensive do to the labor and time involved. It will take a shorter time to cycle your tank if you have enough cured LR
Uncured is LR
right from the Ocean, boxed and sent either directly to you or to your LSF. You do the curing in your tank. Using Uncured LR
takes longer for the Nitrogen cycle to be completed but usually cost allot less.