I have a question for anyone who knows. I have never dealt with the need for it in my old tank from years ago. But now with inverts and corals, I have a need. My test kit is Salifert. So my question is which am I testing for, iodide, or iodate? And what results am I looking for? I tested both. Iodate was 0.06, and iodide was less than 0.01. What is a good goal / additive? Thanks in advance to all