I knew some batches have been recalled a while back. I thought they had it figured out. Just got an email saying they're sending new reagent in 2 to 4 weeks. Frustrating when you're setting up a new tank and trying to keep your levels in check with lime water. I bought a sps pack recently from the forum and had a blue tenuis rtn overnight. My other sps don't have very good polyp extension and look a little stressed. Now I wonder what my alkalinity really is.