I have been adding seachem iodide to my 55g tank and testing daily. I try and maintain the level between .06-.08mg/L but I find that I am having to add 2mL of iodide daily just to maintain that level. I even tried the Kent iodine additive with the same results. I do have a few soft corals and dozens of assorted mushrooms so is it possible they are depleting the iodide that quickly? The tank has been up and running for over two years and I do a small water change about once a month. Anyone else have that often?