I have been having some of my zoas and palys losing there skirts then closing up and fading away. All of my parameters are in check, temp was a little on low side of 75 degrees. Working on bringing that back up. I've been inspecting my tank looking for pest and have noticed a few things. On one of my palys that had closed up had small*bump*on top of it inside. I got some twizers and grab it and it seemed hard so I then pulled it out. It is some what round and hard with a little light tan spot which is mostly white. I've also noticed pods at night on there stalks. And other thing I have found which after researching doesn't seem to effect zoas are what I believe are red planaria worms. I am posting a pic of it. The hard thing that came out of the*zoa*I could not get a good focus on it.*Any help would be greatly appreciated, I am losing zoas one head at a time which is driving me crazy.*