What was on my corals

[Llg]

I have had these two corals for 4 months. They started to recede a month ago when I lost a couple of birdsnests. One is a favia and the other is a leptoseris. I took them out today to dip them as my other sps looked ok, but I had a stylophora a few weeks ago that look like it was being eaten. After dipping in iodine, I noticed that the leptoseris looked nibbled on as well. I dipped them in CoralRx and found these at the bottom. Anything I should be concerned about? I am worried that the two little circles are red bugs, but I am not sure about them or the worms. I could see the heads moving.

Thanks

 

[GoReefin]

Worm looks like a spaghetti worm. Harmless beneficial worm.