The Fuel is mostly for the corals and your macro uptakes more iron than iodine. If the macro aren't fading in colors or slowly disintegrating, then I wouldn't worry about it. As for the monti, they will turn orange/pink if they're bleach or if you're running a low nutrient system. Lastly, rock flower anemones do walk as well. I placed a cluster of 5 together on the sandbed huddled around some rubble and only 2 of them have stayed put. One has move 5" onto the rockwork (and took out a Tyree pink lemonade where it settled near), another has moved 16 inches away to the back left corner, and the most recent walkabout involved one that moved around 12" up onto the rockwork.