So I have these everlasting gobstoppers zoas for 2 months now(top left in the image) and suddenly 2 weeks ago they just close up. The first days both heads opened only halfway and after that they are completely closed since now. I had them in the mid section of my tank with probably moderate to high flow. Before they close they were growing taller as I know they do when they need more light. Yesterday I moved them to lower light and flow area and they haven't opened up yet. I dipped them 2 times with seachem reef dip and I don't see any pests in the frag or the other 2 zoa frags I have. My phosphates are between 0.25-0.50ppm (salifert test kits) since the day I've bought them. Also I am worried about my light, I have 2 T5's bulbs with 78 watts on total, over a 120X50X40 tank. Anyone have any ideas to get them to open?