I'm pretty sure they are and I've been treating as such, but so far they've been resilient against Dr. G's treatment so I want to double check.
Here is a zoomed out pic:
And here is a picture under a microscope:
Any help would be greatly appreciated. I've Googled for black bug reference pics but I haven't found anything that is a strong match yet. The video in this post is probably the strongest match I've found: https://www.reef2reef.com/threads/do-i-have-black-bugs-help.318975/post-5295324
Here is a zoomed out pic:
And here is a picture under a microscope:
Any help would be greatly appreciated. I've Googled for black bug reference pics but I haven't found anything that is a strong match yet. The video in this post is probably the strongest match I've found: https://www.reef2reef.com/threads/do-i-have-black-bugs-help.318975/post-5295324