Hi Lefty,
I was reading a book on mini-reefs last night, and it said that if your adding LR to an established tank you have to cure it on a tarp. That can take up to 3 weeks and it's a smelly job. If your setting up a new tank you can use the LR to cycle your tank and skip the whole curring on the tarp thing. I don't know, I'm new, but it's something to think about.