I added a rock flower nem to my tank yesterday and it seems to have chose its spot overnight but has lost color in its center curious if this was normal or if there’s something I need to do, I also have a nepthea that’s been in my tank for a couple days now, I have it loosely held with a rubber band around my rock but doesn’t seem to attach and doesn’t look very healthy, am I doing this wrong, I’m new to corals and nems