I DON'T HAVE AN IODINE TEST KIT. I AM JUST DOSING ACCORDING TO THE DIRECTIONS ON THE BACK OF THE BOTTLE. THE TANK IS 55G. WILL HEAVY SKIMMING REMOVE ANY IODINE??? I JUST ADDED A SKIMMER A FEW DAYS AGO. DO I NEED TO WORRY ABOUT IT SKIMMING OFF SUPPLEMENTS? OR WILL IT DO ONLY WHAT THE TITLE SAYS "SKIM PROTEIN?"