So rather than start my own thread I figured I'll just add to this one.
Female Ocellaris. I've had her since May 2019. She is in my nano reef which I almost never add stuff to. The last additions were some florida ricordeas a few weeks ago. I had them in my frag tank for months prior to adding. They were just frags on plugs too, no rock.
Long white stringy poo today. The only other thing is perhaps it came from her food? I looked at it under the microscope and it was pretty disappointing. Since it's solid white couldn't really see anything. One semi interesting patch beside it see below. The last picture is a macro shot, and then the clownfish herself.
This is likely the first time she has had this issue. I have been feeding more frequently these days as the nano tank is in my fish room where I'm currently raising baby maroon clownfish, so I've been trying to feed these guys more times a day. Unless this came from food, I find it very hard to believe this is actually some dormant parasite that just started up...
That being said I do have medications on hand and will treat if it looks like I need to.