FWIW, I haven't cracked a pail from the salt that came from the Canadian Distributor, I just finished my last pail from Amazon, so these would be different batches. I have a pail of Probiotic for my own tank from the Canadian Distributor that I'll be using as soon as I do a waterchange. I am also doing a new tank install on Friday and I'll be using a pail of Reef Salt also from the Canadian Distributor for that. I'll let you know how that goes!
Pat, where did you get your salt? Amazon or a Canadian retailer? What is the batch number and date of manufacture of your salt? You'll find this info on the "Quality Certificate" in the pail.