The difference between uncured and cured is that cured rock has been allowed to sit while the dieoff from harvesting and shipping is purged from the rock and all dead organic matter is cleaned out. For setting up a new tank, I would suggest uncured, as the dieoff is what will start your cycle and make your biofiltering capacity strong and healthy. You'll want to start with LS first, I would suggest getting enough to make a sand bed 4" deep. Place a few inches of water in the tank at the proper salinity, add the sand, place a sheet of clean plastic over the sand and fill with mixed saltwater until the tank is 3/4 full, then add your LR. I would go with 1.5 lbs. of LR per gallon of water, this is in the middle of the suggested range, and will allow you lots of options. Then, top off the tank the rest of the way, add a heater, protein skimmer(don't run for the first 2 weeks) and a few good powerheads for current, and let the tank sit for 4-6 weeks for curing time, doing small water changes every 2 weeks. Get a good SW test kit and after the second week, begin testing weekly to keep an eye on your levels. When the ammonia and nitrite levels have balanced out to 0, do one more good water change and you are ready to begin slowly adding livestock. With this setup, you will not need any additional form of filtration unless you simply want it. HTH and good luck.
