So my tank has been up for six months now and three months ago I got a bubble tip anemone for my clown fish to host in. They have all been doing great until a week ago when my anemone suddenly curled up like in the picture below and has been like that for several days. I have fed the anemone Mysis shrimp and I have done a few water changes since I noticed that they were curled up. They have also been moving to a different spot on their rock every night . My pH is at 8.0, my ammonia, and nitrite levels are zero and my nitrate levels are about 20ppm (I am doing more water changes to lower this). My lighting is a 25 watt overhead LED spectrum light fixture. I have a 36 gallon tall fish tank with both live and fake rock, along with two black clown fish, an emerald crab, and four snails. My tank did just have a small random die off of the previous Emerald crab, a blue damselfish, and a shrimp. But I did a large scale water change and watched for any spikes. I do dose both iodine and calcium in my tank and the iodine gets dosed every other day and the calcium gets dosed twice a week. I would think that it was something in the water, however, I had to recently put my fiancé‘s carpet anemone in the tank and it has been just fine. I will include a picture of them too. I just really want to know if I need to remove this anemone or can I potentially save them? Please help!!