Hey everyone, I recently got this colony of zoas and discovered that there were a few heads of Aptasia on some of the zoas. Despite that all the polyps were opening and the colony looked happy. About a week ago I tried plucking the aptasia off but couldn’t really get it. since then I haven’t seen the aptasia but the past few days half of my colony hasn’t been opening and as you can see in the picture a couple of the polyps turned white and shriveled. Has anyone dealt with this before? I don’t think it’s pox but also I don’t know what else it could be. Thanks for the help