I have and AP24 with PC lighting with primarily zoa's, with candy cane, star polyps, xenia, cloves, toadstool, sun corals, electric flame scallop. I do weekly water change of 5 gallons with Tropic Marin salt, no protien skimmer just filter floss that gets replaced every 3 to 4 days. I've be hearing and reading about the benifits of Iodine for softies. Would it be recommended to Test for Iodine? If so what test kit is recommended. Next is if I have to dose what Iodine product is recommended?