I would steer clear of the coralife salt, just cause I know nothing about it, it doesnt appear to be popular and who knows whats in it?
As for some of the online purchasing of salt, Im glad alot of you are able to shave some money off your salt purchases. sometimes it helps to save a buck, just be sure and tell your local store when they go out of buissness that you helped. Dont take it the wrong way, I know saving money is important to alot if not everyone. And if you make an effort to help your local store in other ways ignore me. But I get agrivated by people who appear to take great pride in not supporting there local store by finding every way possible to buy online. Anyway im rambling, but all that to say support your local store in some way or they wont be there when you do need them.