RE: curing LR
Rinsing with the hose was probably not something I would do. It could have killed more then what was already dead but there is nothing to do about that now. Spilt Milk.
I would suggest taking a tooth brush to the rock and cleaning it well to remove any dead material and then putting it back in water with a skimmer. Running some carbon should help with the smell. It can take up to a month to totally cure. Just test for ammonia. They will be a good indication of where it stands in the curing process.
Gary
125 SPS, 75 gal. LPS/softie reef, 9 gal. Nano