So as many of you know caribsea did the trial of their reefcal and reefbuffer product. I got shipped two of each, so a total of 16 ounces of the reefcal and 12 onces of the reef buffer plus. I realize I am probably never going to use them and perhaps someone else can get some use out of it. I paid nothing, so I don't want anything for them, unless you want to be generous. Perhaps a partial trade for a refractometer?