Originally Posted by Bang Guy
That's fine. Personally I'd avoid the shrimp method but it will eventually cycle your tank.
If it's already established LR, will it cycle? probably not... When you add 80lbs of fully cured LR, you may not even need a cycle. The cycle is just to establish aerobic bacteria, but your 80lbs of LR is already full of it. I'd let it sit for a few weeks to allow the bacteria to spread to your sand, and then add a small fish to see if you get a spike. that's what i would do anyway...